20723625

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{109}}^1$

素因数の和:156

約数の個数: 72

約数和(自身を含む): 40823640

約数和(自身を除く): 20100015

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 109, 117, 125, 169, 195, 225, 325, 327, 375, 507, 545, 585, 845, 975, 981, 1125, 1417, 1521, 1625, 1635, 2535, 2725, 2925, 4225, 4251, 4875, 4905, 7085, 7605, 8175, 12675, 12753, 13625, 14625, 18421, 21125, 21255, 24525, 35425, 38025, 40875, 55263, 63375, 63765, 92105, 106275, 122625, 165789, 177125, 190125, 276315, 318825, 460525, 531375, 828945, 1381575, 1594125, 2302625, 4144725, 6907875, 20723625]

約数ペア:

[(1, 20723625), (3, 6907875), (5, 4144725), (9, 2302625), (13, 1594125), (15, 1381575), (25, 828945), (39, 531375), (45, 460525), (65, 318825), (75, 276315), (109, 190125), (117, 177125), (125, 165789), (169, 122625), (195, 106275), (225, 92105), (325, 63765), (327, 63375), (375, 55263), (507, 40875), (545, 38025), (585, 35425), (845, 24525), (975, 21255), (981, 21125), (1125, 18421), (1417, 14625), (1521, 13625), (1625, 12753), (1635, 12675), (2535, 8175), (2725, 7605), (2925, 7085), (4225, 4905), (4251, 4875)]