21498625

素因数分解:

$5^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:250

約数の個数: 32

約数和(自身を含む): 29023488

約数和(自身を除く): 7524863

約数列:

[1, 5, 17, 25, 67, 85, 125, 151, 335, 425, 755, 1139, 1675, 2125, 2567, 3775, 5695, 8375, 10117, 12835, 18875, 28475, 50585, 64175, 142375, 171989, 252925, 320875, 859945, 1264625, 4299725, 21498625]

約数ペア:

[(1, 21498625), (5, 4299725), (17, 1264625), (25, 859945), (67, 320875), (85, 252925), (125, 171989), (151, 142375), (335, 64175), (425, 50585), (755, 28475), (1139, 18875), (1675, 12835), (2125, 10117), (2567, 8375), (3775, 5695)]