81573680

素因数分解:

$2^4\times 5^1\times {\mathrm{241}}^1\times {\mathrm{4231}}^1$

素因数の和:4485

約数の個数: 40

約数和(自身を含む): 190490784

約数和(自身を除く): 108917104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 241, 482, 964, 1205, 1928, 2410, 3856, 4231, 4820, 8462, 9640, 16924, 19280, 21155, 33848, 42310, 67696, 84620, 169240, 338480, 1019671, 2039342, 4078684, 5098355, 8157368, 10196710, 16314736, 20393420, 40786840, 81573680]

約数ペア:

[(1, 81573680), (2, 40786840), (4, 20393420), (5, 16314736), (8, 10196710), (10, 8157368), (16, 5098355), (20, 4078684), (40, 2039342), (80, 1019671), (241, 338480), (482, 169240), (964, 84620), (1205, 67696), (1928, 42310), (2410, 33848), (3856, 21155), (4231, 19280), (4820, 16924), (8462, 9640)]