21307125

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{8117}}^1$

素因数の和:8142

約数の個数: 32

約数和(自身を含む): 40525056

約数和(自身を除く): 19217931

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 875, 2625, 8117, 24351, 40585, 56819, 121755, 170457, 202925, 284095, 608775, 852285, 1014625, 1420475, 3043875, 4261425, 7102375, 21307125]

約数ペア:

[(1, 21307125), (3, 7102375), (5, 4261425), (7, 3043875), (15, 1420475), (21, 1014625), (25, 852285), (35, 608775), (75, 284095), (105, 202925), (125, 170457), (175, 121755), (375, 56819), (525, 40585), (875, 24351), (2625, 8117)]