16921125

素因数分解:

$3^2\times 5^3\times {\mathrm{13}}^2\times {\mathrm{89}}^1$

素因数の和:136

約数の個数: 72

約数和(自身を含む): 33401160

約数和(自身を除く): 16480035

約数列:

[1, 3, 5, 9, 13, 15, 25, 39, 45, 65, 75, 89, 117, 125, 169, 195, 225, 267, 325, 375, 445, 507, 585, 801, 845, 975, 1125, 1157, 1335, 1521, 1625, 2225, 2535, 2925, 3471, 4005, 4225, 4875, 5785, 6675, 7605, 10413, 11125, 12675, 14625, 15041, 17355, 20025, 21125, 28925, 33375, 38025, 45123, 52065, 63375, 75205, 86775, 100125, 135369, 144625, 190125, 225615, 260325, 376025, 433875, 676845, 1128075, 1301625, 1880125, 3384225, 5640375, 16921125]

約数ペア:

[(1, 16921125), (3, 5640375), (5, 3384225), (9, 1880125), (13, 1301625), (15, 1128075), (25, 676845), (39, 433875), (45, 376025), (65, 260325), (75, 225615), (89, 190125), (117, 144625), (125, 135369), (169, 100125), (195, 86775), (225, 75205), (267, 63375), (325, 52065), (375, 45123), (445, 38025), (507, 33375), (585, 28925), (801, 21125), (845, 20025), (975, 17355), (1125, 15041), (1157, 14625), (1335, 12675), (1521, 11125), (1625, 10413), (2225, 7605), (2535, 6675), (2925, 5785), (3471, 4875), (4005, 4225)]