639541140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{107}}^2$

素因数の和:259

約数の個数: 216

約数和(自身を含む): 2213396640

約数和(自身を除く): 1573855500

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 49, 57, 60, 70, 76, 84, 95, 98, 105, 107, 114, 133, 140, 147, 190, 196, 210, 214, 228, 245, 266, 285, 294, 321, 380, 399, 420, 428, 490, 532, 535, 570, 588, 642, 665, 735, 749, 798, 931, 980, 1070, 1140, 1284, 1330, 1470, 1498, 1596, 1605, 1862, 1995, 2033, 2140, 2247, 2660, 2793, 2940, 2996, 3210, 3724, 3745, 3990, 4066, 4494, 4655, 5243, 5586, 6099, 6420, 7490, 7980, 8132, 8988, 9310, 10165, 10486, 11172, 11235, 11449, 12198, 13965, 14231, 14980, 15729, 18620, 20330, 20972, 22470, 22898, 24396, 26215, 27930, 28462, 30495, 31458, 34347, 40660, 42693, 44940, 45796, 52430, 55860, 56924, 57245, 60990, 62916, 68694, 71155, 78645, 80143, 85386, 99617, 104860, 114490, 121980, 137388, 142310, 157290, 160286, 170772, 171735, 199234, 213465, 217531, 228980, 240429, 284620, 298851, 314580, 320572, 343470, 398468, 400715, 426930, 435062, 480858, 498085, 561001, 597702, 652593, 686940, 801430, 853860, 870124, 961716, 996170, 1087655, 1122002, 1195404, 1202145, 1305186, 1494255, 1522717, 1602860, 1683003, 1992340, 2175310, 2244004, 2404290, 2610372, 2805005, 2988510, 3045434, 3262965, 3366006, 4350620, 4568151, 4808580, 5610010, 5977020, 6090868, 6525930, 6732012, 7613585, 8415015, 9136302, 10659019, 11220020, 13051860, 15227170, 16830030, 18272604, 21318038, 22840755, 30454340, 31977057, 33660060, 42636076, 45681510, 53295095, 63954114, 91363020, 106590190, 127908228, 159885285, 213180380, 319770570, 639541140]

約数ペア:

[(1, 639541140), (2, 319770570), (3, 213180380), (4, 159885285), (5, 127908228), (6, 106590190), (7, 91363020), (10, 63954114), (12, 53295095), (14, 45681510), (15, 42636076), (19, 33660060), (20, 31977057), (21, 30454340), (28, 22840755), (30, 21318038), (35, 18272604), (38, 16830030), (42, 15227170), (49, 13051860), (57, 11220020), (60, 10659019), (70, 9136302), (76, 8415015), (84, 7613585), (95, 6732012), (98, 6525930), (105, 6090868), (107, 5977020), (114, 5610010), (133, 4808580), (140, 4568151), (147, 4350620), (190, 3366006), (196, 3262965), (210, 3045434), (214, 2988510), (228, 2805005), (245, 2610372), (266, 2404290), (285, 2244004), (294, 2175310), (321, 1992340), (380, 1683003), (399, 1602860), (420, 1522717), (428, 1494255), (490, 1305186), (532, 1202145), (535, 1195404), (570, 1122002), (588, 1087655), (642, 996170), (665, 961716), (735, 870124), (749, 853860), (798, 801430), (931, 686940), (980, 652593), (1070, 597702), (1140, 561001), (1284, 498085), (1330, 480858), (1470, 435062), (1498, 426930), (1596, 400715), (1605, 398468), (1862, 343470), (1995, 320572), (2033, 314580), (2140, 298851), (2247, 284620), (2660, 240429), (2793, 228980), (2940, 217531), (2996, 213465), (3210, 199234), (3724, 171735), (3745, 170772), (3990, 160286), (4066, 157290), (4494, 142310), (4655, 137388), (5243, 121980), (5586, 114490), (6099, 104860), (6420, 99617), (7490, 85386), (7980, 80143), (8132, 78645), (8988, 71155), (9310, 68694), (10165, 62916), (10486, 60990), (11172, 57245), (11235, 56924), (11449, 55860), (12198, 52430), (13965, 45796), (14231, 44940), (14980, 42693), (15729, 40660), (18620, 34347), (20330, 31458), (20972, 30495), (22470, 28462), (22898, 27930), (24396, 26215)]