20813640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1621}}^1$

素因数の和:1742

約数の個数: 64

約数和(自身を含む): 63063360

約数和(自身を除く): 42249720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 107, 120, 214, 321, 428, 535, 642, 856, 1070, 1284, 1605, 1621, 2140, 2568, 3210, 3242, 4280, 4863, 6420, 6484, 8105, 9726, 12840, 12968, 16210, 19452, 24315, 32420, 38904, 48630, 64840, 97260, 173447, 194520, 346894, 520341, 693788, 867235, 1040682, 1387576, 1734470, 2081364, 2601705, 3468940, 4162728, 5203410, 6937880, 10406820, 20813640]

約数ペア:

[(1, 20813640), (2, 10406820), (3, 6937880), (4, 5203410), (5, 4162728), (6, 3468940), (8, 2601705), (10, 2081364), (12, 1734470), (15, 1387576), (20, 1040682), (24, 867235), (30, 693788), (40, 520341), (60, 346894), (107, 194520), (120, 173447), (214, 97260), (321, 64840), (428, 48630), (535, 38904), (642, 32420), (856, 24315), (1070, 19452), (1284, 16210), (1605, 12968), (1621, 12840), (2140, 9726), (2568, 8105), (3210, 6484), (3242, 6420), (4280, 4863)]