20950680

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{71}}^1\times {\mathrm{2459}}^1$

素因数の和:2544

約数の個数: 64

約数和(自身を含む): 63763200

約数和(自身を除く): 42812520

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2459, 2840, 4260, 4918, 7377, 8520, 9836, 12295, 14754, 19672, 24590, 29508, 36885, 49180, 59016, 73770, 98360, 147540, 174589, 295080, 349178, 523767, 698356, 872945, 1047534, 1396712, 1745890, 2095068, 2618835, 3491780, 4190136, 5237670, 6983560, 10475340, 20950680]

約数ペア:

[(1, 20950680), (2, 10475340), (3, 6983560), (4, 5237670), (5, 4190136), (6, 3491780), (8, 2618835), (10, 2095068), (12, 1745890), (15, 1396712), (20, 1047534), (24, 872945), (30, 698356), (40, 523767), (60, 349178), (71, 295080), (120, 174589), (142, 147540), (213, 98360), (284, 73770), (355, 59016), (426, 49180), (568, 36885), (710, 29508), (852, 24590), (1065, 19672), (1420, 14754), (1704, 12295), (2130, 9836), (2459, 8520), (2840, 7377), (4260, 4918)]