68540220

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{409}}^1$

素因数の和:457

約数の個数: 216

約数和(自身を含む): 255200400

約数和(自身を除く): 186660180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 19, 20, 21, 28, 30, 35, 36, 38, 42, 45, 49, 57, 60, 63, 70, 76, 84, 90, 95, 98, 105, 114, 126, 133, 140, 147, 171, 180, 190, 196, 210, 228, 245, 252, 266, 285, 294, 315, 342, 380, 399, 409, 420, 441, 490, 532, 570, 588, 630, 665, 684, 735, 798, 818, 855, 882, 931, 980, 1140, 1197, 1227, 1260, 1330, 1470, 1596, 1636, 1710, 1764, 1862, 1995, 2045, 2205, 2394, 2454, 2660, 2793, 2863, 2940, 3420, 3681, 3724, 3990, 4090, 4410, 4655, 4788, 4908, 5586, 5726, 5985, 6135, 7362, 7771, 7980, 8180, 8379, 8589, 8820, 9310, 11172, 11452, 11970, 12270, 13965, 14315, 14724, 15542, 16758, 17178, 18405, 18620, 20041, 23313, 23940, 24540, 25767, 27930, 28630, 31084, 33516, 34356, 36810, 38855, 40082, 41895, 42945, 46626, 51534, 54397, 55860, 57260, 60123, 69939, 73620, 77710, 80164, 83790, 85890, 93252, 100205, 103068, 108794, 116565, 120246, 128835, 139878, 155420, 163191, 167580, 171780, 180369, 200410, 217588, 233130, 240492, 257670, 271985, 279756, 300615, 326382, 349695, 360738, 380779, 400820, 466260, 489573, 515340, 543970, 601230, 652764, 699390, 721476, 761558, 815955, 901845, 979146, 1087940, 1142337, 1202460, 1398780, 1523116, 1631910, 1803690, 1903895, 1958292, 2284674, 2447865, 3263820, 3427011, 3607380, 3807790, 4569348, 4895730, 5711685, 6854022, 7615580, 9791460, 11423370, 13708044, 17135055, 22846740, 34270110, 68540220]

約数ペア:

[(1, 68540220), (2, 34270110), (3, 22846740), (4, 17135055), (5, 13708044), (6, 11423370), (7, 9791460), (9, 7615580), (10, 6854022), (12, 5711685), (14, 4895730), (15, 4569348), (18, 3807790), (19, 3607380), (20, 3427011), (21, 3263820), (28, 2447865), (30, 2284674), (35, 1958292), (36, 1903895), (38, 1803690), (42, 1631910), (45, 1523116), (49, 1398780), (57, 1202460), (60, 1142337), (63, 1087940), (70, 979146), (76, 901845), (84, 815955), (90, 761558), (95, 721476), (98, 699390), (105, 652764), (114, 601230), (126, 543970), (133, 515340), (140, 489573), (147, 466260), (171, 400820), (180, 380779), (190, 360738), (196, 349695), (210, 326382), (228, 300615), (245, 279756), (252, 271985), (266, 257670), (285, 240492), (294, 233130), (315, 217588), (342, 200410), (380, 180369), (399, 171780), (409, 167580), (420, 163191), (441, 155420), (490, 139878), (532, 128835), (570, 120246), (588, 116565), (630, 108794), (665, 103068), (684, 100205), (735, 93252), (798, 85890), (818, 83790), (855, 80164), (882, 77710), (931, 73620), (980, 69939), (1140, 60123), (1197, 57260), (1227, 55860), (1260, 54397), (1330, 51534), (1470, 46626), (1596, 42945), (1636, 41895), (1710, 40082), (1764, 38855), (1862, 36810), (1995, 34356), (2045, 33516), (2205, 31084), (2394, 28630), (2454, 27930), (2660, 25767), (2793, 24540), (2863, 23940), (2940, 23313), (3420, 20041), (3681, 18620), (3724, 18405), (3990, 17178), (4090, 16758), (4410, 15542), (4655, 14724), (4788, 14315), (4908, 13965), (5586, 12270), (5726, 11970), (5985, 11452), (6135, 11172), (7362, 9310), (7771, 8820), (7980, 8589), (8180, 8379)]