15717625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:127

約数の個数: 64

約数和(自身を含む): 25878528

約数和(自身を除く): 10160903

約数列:

[1, 5, 7, 11, 23, 25, 35, 55, 71, 77, 115, 125, 161, 175, 253, 275, 355, 385, 497, 575, 781, 805, 875, 1265, 1375, 1633, 1771, 1775, 1925, 2485, 2875, 3905, 4025, 5467, 6325, 8165, 8855, 8875, 9625, 11431, 12425, 17963, 19525, 20125, 27335, 31625, 40825, 44275, 57155, 62125, 89815, 97625, 125741, 136675, 204125, 221375, 285775, 449075, 628705, 683375, 1428875, 2245375, 3143525, 15717625]

約数ペア:

[(1, 15717625), (5, 3143525), (7, 2245375), (11, 1428875), (23, 683375), (25, 628705), (35, 449075), (55, 285775), (71, 221375), (77, 204125), (115, 136675), (125, 125741), (161, 97625), (175, 89815), (253, 62125), (275, 57155), (355, 44275), (385, 40825), (497, 31625), (575, 27335), (781, 20125), (805, 19525), (875, 17963), (1265, 12425), (1375, 11431), (1633, 9625), (1771, 8875), (1775, 8855), (1925, 8165), (2485, 6325), (2875, 5467), (3905, 4025)]