20117494640

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{352691}}^1$

素因数の和:352758

約数の個数: 80

約数和(自身を含む): 50381346816

約数和(自身を除く): 30263852176

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 31, 40, 46, 62, 80, 92, 115, 124, 155, 184, 230, 248, 310, 368, 460, 496, 620, 713, 920, 1240, 1426, 1840, 2480, 2852, 3565, 5704, 7130, 11408, 14260, 28520, 57040, 352691, 705382, 1410764, 1763455, 2821528, 3526910, 5643056, 7053820, 8111893, 10933421, 14107640, 16223786, 21866842, 28215280, 32447572, 40559465, 43733684, 54667105, 64895144, 81118930, 87467368, 109334210, 129790288, 162237860, 174934736, 218668420, 251468683, 324475720, 437336840, 502937366, 648951440, 874673680, 1005874732, 1257343415, 2011749464, 2514686830, 4023498928, 5029373660, 10058747320, 20117494640]

約数ペア:

[(1, 20117494640), (2, 10058747320), (4, 5029373660), (5, 4023498928), (8, 2514686830), (10, 2011749464), (16, 1257343415), (20, 1005874732), (23, 874673680), (31, 648951440), (40, 502937366), (46, 437336840), (62, 324475720), (80, 251468683), (92, 218668420), (115, 174934736), (124, 162237860), (155, 129790288), (184, 109334210), (230, 87467368), (248, 81118930), (310, 64895144), (368, 54667105), (460, 43733684), (496, 40559465), (620, 32447572), (713, 28215280), (920, 21866842), (1240, 16223786), (1426, 14107640), (1840, 10933421), (2480, 8111893), (2852, 7053820), (3565, 5643056), (5704, 3526910), (7130, 2821528), (11408, 1763455), (14260, 1410764), (28520, 705382), (57040, 352691)]