20881100

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1$

素因数の和:275

約数の個数: 72

約数和(自身を含む): 48934368

約数和(自身を除く): 28053268

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 68, 71, 85, 100, 142, 170, 173, 284, 340, 346, 355, 425, 692, 710, 850, 865, 1207, 1420, 1700, 1730, 1775, 2414, 2941, 3460, 3550, 4325, 4828, 5882, 6035, 7100, 8650, 11764, 12070, 12283, 14705, 17300, 24140, 24566, 29410, 30175, 49132, 58820, 60350, 61415, 73525, 120700, 122830, 147050, 208811, 245660, 294100, 307075, 417622, 614150, 835244, 1044055, 1228300, 2088110, 4176220, 5220275, 10440550, 20881100]

約数ペア:

[(1, 20881100), (2, 10440550), (4, 5220275), (5, 4176220), (10, 2088110), (17, 1228300), (20, 1044055), (25, 835244), (34, 614150), (50, 417622), (68, 307075), (71, 294100), (85, 245660), (100, 208811), (142, 147050), (170, 122830), (173, 120700), (284, 73525), (340, 61415), (346, 60350), (355, 58820), (425, 49132), (692, 30175), (710, 29410), (850, 24566), (865, 24140), (1207, 17300), (1420, 14705), (1700, 12283), (1730, 12070), (1775, 11764), (2414, 8650), (2941, 7100), (3460, 6035), (3550, 5882), (4325, 4828)]