20919570

素因数分解:

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

素因数の和:157

約数の個数: 128

約数和(自身を含む): 62208000

約数和(自身を除く): 41288430

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 19, 21, 30, 35, 38, 42, 49, 57, 70, 95, 98, 105, 107, 114, 133, 147, 190, 210, 214, 245, 266, 285, 294, 321, 343, 399, 490, 535, 570, 642, 665, 686, 735, 749, 798, 931, 1029, 1070, 1330, 1470, 1498, 1605, 1715, 1862, 1995, 2033, 2058, 2247, 2793, 3210, 3430, 3745, 3990, 4066, 4494, 4655, 5145, 5243, 5586, 6099, 6517, 7490, 9310, 10165, 10290, 10486, 11235, 12198, 13034, 13965, 14231, 15729, 19551, 20330, 22470, 26215, 27930, 28462, 30495, 31458, 32585, 36701, 39102, 42693, 52430, 60990, 65170, 71155, 73402, 78645, 85386, 97755, 99617, 110103, 142310, 157290, 183505, 195510, 199234, 213465, 220206, 298851, 367010, 426930, 498085, 550515, 597702, 697319, 996170, 1101030, 1394638, 1494255, 2091957, 2988510, 3486595, 4183914, 6973190, 10459785, 20919570]

約数ペア:

[(1, 20919570), (2, 10459785), (3, 6973190), (5, 4183914), (6, 3486595), (7, 2988510), (10, 2091957), (14, 1494255), (15, 1394638), (19, 1101030), (21, 996170), (30, 697319), (35, 597702), (38, 550515), (42, 498085), (49, 426930), (57, 367010), (70, 298851), (95, 220206), (98, 213465), (105, 199234), (107, 195510), (114, 183505), (133, 157290), (147, 142310), (190, 110103), (210, 99617), (214, 97755), (245, 85386), (266, 78645), (285, 73402), (294, 71155), (321, 65170), (343, 60990), (399, 52430), (490, 42693), (535, 39102), (570, 36701), (642, 32585), (665, 31458), (686, 30495), (735, 28462), (749, 27930), (798, 26215), (931, 22470), (1029, 20330), (1070, 19551), (1330, 15729), (1470, 14231), (1498, 13965), (1605, 13034), (1715, 12198), (1862, 11235), (1995, 10486), (2033, 10290), (2058, 10165), (2247, 9310), (2793, 7490), (3210, 6517), (3430, 6099), (3745, 5586), (3990, 5243), (4066, 5145), (4494, 4655)]