81834680

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{157}}^2$

素因数の和:408

約数の個数: 48

約数和(自身を含む): 187540920

約数和(自身を除く): 105706240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 157, 166, 314, 332, 415, 628, 664, 785, 830, 1256, 1570, 1660, 3140, 3320, 6280, 13031, 24649, 26062, 49298, 52124, 65155, 98596, 104248, 123245, 130310, 197192, 246490, 260620, 492980, 521240, 985960, 2045867, 4091734, 8183468, 10229335, 16366936, 20458670, 40917340, 81834680]

約数ペア:

[(1, 81834680), (2, 40917340), (4, 20458670), (5, 16366936), (8, 10229335), (10, 8183468), (20, 4091734), (40, 2045867), (83, 985960), (157, 521240), (166, 492980), (314, 260620), (332, 246490), (415, 197192), (628, 130310), (664, 123245), (785, 104248), (830, 98596), (1256, 65155), (1570, 52124), (1660, 49298), (3140, 26062), (3320, 24649), (6280, 13031)]