21070125

素因数分解:

$3^4\times 5^3\times {\mathrm{2081}}^1$

素因数の和:2108

約数の個数: 40

約数和(自身を含む): 39299832

約数和(自身を除く): 18229707

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 75, 81, 125, 135, 225, 375, 405, 675, 1125, 2025, 2081, 3375, 6243, 10125, 10405, 18729, 31215, 52025, 56187, 93645, 156075, 168561, 260125, 280935, 468225, 780375, 842805, 1404675, 2341125, 4214025, 7023375, 21070125]

約数ペア:

[(1, 21070125), (3, 7023375), (5, 4214025), (9, 2341125), (15, 1404675), (25, 842805), (27, 780375), (45, 468225), (75, 280935), (81, 260125), (125, 168561), (135, 156075), (225, 93645), (375, 56187), (405, 52025), (675, 31215), (1125, 18729), (2025, 10405), (2081, 10125), (3375, 6243)]