38814280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{173}}^1$

素因数の和:334

約数の個数: 64

約数和(自身を含む): 90201600

約数和(自身を除く): 51387320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 79, 142, 158, 173, 284, 316, 346, 355, 395, 568, 632, 692, 710, 790, 865, 1384, 1420, 1580, 1730, 2840, 3160, 3460, 5609, 6920, 11218, 12283, 13667, 22436, 24566, 27334, 28045, 44872, 49132, 54668, 56090, 61415, 68335, 98264, 109336, 112180, 122830, 136670, 224360, 245660, 273340, 491320, 546680, 970357, 1940714, 3881428, 4851785, 7762856, 9703570, 19407140, 38814280]

約数ペア:

[(1, 38814280), (2, 19407140), (4, 9703570), (5, 7762856), (8, 4851785), (10, 3881428), (20, 1940714), (40, 970357), (71, 546680), (79, 491320), (142, 273340), (158, 245660), (173, 224360), (284, 136670), (316, 122830), (346, 112180), (355, 109336), (395, 98264), (568, 68335), (632, 61415), (692, 56090), (710, 54668), (790, 49132), (865, 44872), (1384, 28045), (1420, 27334), (1580, 24566), (1730, 22436), (2840, 13667), (3160, 12283), (3460, 11218), (5609, 6920)]