20860125

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1$

素因数の和:431

約数の個数: 64

約数和(自身を含む): 40884480

約数和(自身を除く): 20024355

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 125, 143, 165, 195, 275, 325, 375, 389, 429, 715, 825, 975, 1167, 1375, 1625, 1945, 2145, 3575, 4125, 4279, 4875, 5057, 5835, 9725, 10725, 12837, 15171, 17875, 21395, 25285, 29175, 48625, 53625, 55627, 64185, 75855, 106975, 126425, 145875, 166881, 278135, 320925, 379275, 534875, 632125, 834405, 1390675, 1604625, 1896375, 4172025, 6953375, 20860125]

約数ペア:

[(1, 20860125), (3, 6953375), (5, 4172025), (11, 1896375), (13, 1604625), (15, 1390675), (25, 834405), (33, 632125), (39, 534875), (55, 379275), (65, 320925), (75, 278135), (125, 166881), (143, 145875), (165, 126425), (195, 106975), (275, 75855), (325, 64185), (375, 55627), (389, 53625), (429, 48625), (715, 29175), (825, 25285), (975, 21395), (1167, 17875), (1375, 15171), (1625, 12837), (1945, 10725), (2145, 9725), (3575, 5835), (4125, 5057), (4279, 4875)]