31151960

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1567}}^1$

素因数の和:1656

約数の個数: 64

約数和(自身を含む): 81285120

約数和(自身を除く): 50133160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1567, 1988, 2485, 2840, 3134, 3976, 4970, 6268, 7835, 9940, 10969, 12536, 15670, 19880, 21938, 31340, 43876, 54845, 62680, 87752, 109690, 111257, 219380, 222514, 438760, 445028, 556285, 778799, 890056, 1112570, 1557598, 2225140, 3115196, 3893995, 4450280, 6230392, 7787990, 15575980, 31151960]

約数ペア:

[(1, 31151960), (2, 15575980), (4, 7787990), (5, 6230392), (7, 4450280), (8, 3893995), (10, 3115196), (14, 2225140), (20, 1557598), (28, 1112570), (35, 890056), (40, 778799), (56, 556285), (70, 445028), (71, 438760), (140, 222514), (142, 219380), (280, 111257), (284, 109690), (355, 87752), (497, 62680), (568, 54845), (710, 43876), (994, 31340), (1420, 21938), (1567, 19880), (1988, 15670), (2485, 12536), (2840, 10969), (3134, 9940), (3976, 7835), (4970, 6268)]