21030660

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16691}}^1$

素因数の和:16713

約数の個数: 72

約数和(自身を含む): 72910656

約数和(自身を除く): 51879996

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16691, 33382, 50073, 66764, 83455, 100146, 116837, 150219, 166910, 200292, 233674, 250365, 300438, 333820, 350511, 467348, 500730, 584185, 600876, 701022, 751095, 1001460, 1051533, 1168370, 1402044, 1502190, 1752555, 2103066, 2336740, 3004380, 3505110, 4206132, 5257665, 7010220, 10515330, 21030660]

約数ペア:

[(1, 21030660), (2, 10515330), (3, 7010220), (4, 5257665), (5, 4206132), (6, 3505110), (7, 3004380), (9, 2336740), (10, 2103066), (12, 1752555), (14, 1502190), (15, 1402044), (18, 1168370), (20, 1051533), (21, 1001460), (28, 751095), (30, 701022), (35, 600876), (36, 584185), (42, 500730), (45, 467348), (60, 350511), (63, 333820), (70, 300438), (84, 250365), (90, 233674), (105, 200292), (126, 166910), (140, 150219), (180, 116837), (210, 100146), (252, 83455), (315, 66764), (420, 50073), (630, 33382), (1260, 16691)]