81950800

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1$

素因数の和:341

約数の個数: 120

約数和(自身を含む): 213111360

約数和(自身を除く): 131160560

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 41, 50, 76, 80, 82, 95, 100, 152, 164, 190, 200, 205, 263, 304, 328, 380, 400, 410, 475, 526, 656, 760, 779, 820, 950, 1025, 1052, 1315, 1520, 1558, 1640, 1900, 2050, 2104, 2630, 3116, 3280, 3800, 3895, 4100, 4208, 4997, 5260, 6232, 6575, 7600, 7790, 8200, 9994, 10520, 10783, 12464, 13150, 15580, 16400, 19475, 19988, 21040, 21566, 24985, 26300, 31160, 38950, 39976, 43132, 49970, 52600, 53915, 62320, 77900, 79952, 86264, 99940, 105200, 107830, 124925, 155800, 172528, 199880, 204877, 215660, 249850, 269575, 311600, 399760, 409754, 431320, 499700, 539150, 819508, 862640, 999400, 1024385, 1078300, 1639016, 1998800, 2048770, 2156600, 3278032, 4097540, 4313200, 5121925, 8195080, 10243850, 16390160, 20487700, 40975400, 81950800]

約数ペア:

[(1, 81950800), (2, 40975400), (4, 20487700), (5, 16390160), (8, 10243850), (10, 8195080), (16, 5121925), (19, 4313200), (20, 4097540), (25, 3278032), (38, 2156600), (40, 2048770), (41, 1998800), (50, 1639016), (76, 1078300), (80, 1024385), (82, 999400), (95, 862640), (100, 819508), (152, 539150), (164, 499700), (190, 431320), (200, 409754), (205, 399760), (263, 311600), (304, 269575), (328, 249850), (380, 215660), (400, 204877), (410, 199880), (475, 172528), (526, 155800), (656, 124925), (760, 107830), (779, 105200), (820, 99940), (950, 86264), (1025, 79952), (1052, 77900), (1315, 62320), (1520, 53915), (1558, 52600), (1640, 49970), (1900, 43132), (2050, 39976), (2104, 38950), (2630, 31160), (3116, 26300), (3280, 24985), (3800, 21566), (3895, 21040), (4100, 19988), (4208, 19475), (4997, 16400), (5260, 15580), (6232, 13150), (6575, 12464), (7600, 10783), (7790, 10520), (8200, 9994)]