28920100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:517

約数の個数: 72

約数和(自身を含む): 69745536

約数和(自身を除く): 40825436

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 61, 100, 110, 122, 220, 244, 275, 305, 431, 550, 610, 671, 862, 1100, 1220, 1342, 1525, 1724, 2155, 2684, 3050, 3355, 4310, 4741, 6100, 6710, 8620, 9482, 10775, 13420, 16775, 18964, 21550, 23705, 26291, 33550, 43100, 47410, 52582, 67100, 94820, 105164, 118525, 131455, 237050, 262910, 289201, 474100, 525820, 578402, 657275, 1156804, 1314550, 1446005, 2629100, 2892010, 5784020, 7230025, 14460050, 28920100]

約数ペア:

[(1, 28920100), (2, 14460050), (4, 7230025), (5, 5784020), (10, 2892010), (11, 2629100), (20, 1446005), (22, 1314550), (25, 1156804), (44, 657275), (50, 578402), (55, 525820), (61, 474100), (100, 289201), (110, 262910), (122, 237050), (220, 131455), (244, 118525), (275, 105164), (305, 94820), (431, 67100), (550, 52582), (610, 47410), (671, 43100), (862, 33550), (1100, 26291), (1220, 23705), (1342, 21550), (1525, 18964), (1724, 16775), (2155, 13420), (2684, 10775), (3050, 9482), (3355, 8620), (4310, 6710), (4741, 6100)]