28201875

素因数分解:

$3^1\times 5^4\times {\mathrm{13}}^2\times {\mathrm{89}}^1$

素因数の和:138

約数の個数: 60

約数和(自身を含む): 51452280

約数和(自身を除く): 23250405

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 89, 125, 169, 195, 267, 325, 375, 445, 507, 625, 845, 975, 1157, 1335, 1625, 1875, 2225, 2535, 3471, 4225, 4875, 5785, 6675, 8125, 11125, 12675, 15041, 17355, 21125, 24375, 28925, 33375, 45123, 55625, 63375, 75205, 86775, 105625, 144625, 166875, 225615, 316875, 376025, 433875, 723125, 1128075, 1880125, 2169375, 5640375, 9400625, 28201875]

約数ペア:

[(1, 28201875), (3, 9400625), (5, 5640375), (13, 2169375), (15, 1880125), (25, 1128075), (39, 723125), (65, 433875), (75, 376025), (89, 316875), (125, 225615), (169, 166875), (195, 144625), (267, 105625), (325, 86775), (375, 75205), (445, 63375), (507, 55625), (625, 45123), (845, 33375), (975, 28925), (1157, 24375), (1335, 21125), (1625, 17355), (1875, 15041), (2225, 12675), (2535, 11125), (3471, 8125), (4225, 6675), (4875, 5785)]