20945880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{701}}^1$

素因数の和:801

約数の個数: 96

約数和(自身を含む): 68992560

約数和(自身を除く): 48046680

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 83, 90, 120, 166, 180, 249, 332, 360, 415, 498, 664, 701, 747, 830, 996, 1245, 1402, 1494, 1660, 1992, 2103, 2490, 2804, 2988, 3320, 3505, 3735, 4206, 4980, 5608, 5976, 6309, 7010, 7470, 8412, 9960, 10515, 12618, 14020, 14940, 16824, 21030, 25236, 28040, 29880, 31545, 42060, 50472, 58183, 63090, 84120, 116366, 126180, 174549, 232732, 252360, 290915, 349098, 465464, 523647, 581830, 698196, 872745, 1047294, 1163660, 1396392, 1745490, 2094588, 2327320, 2618235, 3490980, 4189176, 5236470, 6981960, 10472940, 20945880]

約数ペア:

[(1, 20945880), (2, 10472940), (3, 6981960), (4, 5236470), (5, 4189176), (6, 3490980), (8, 2618235), (9, 2327320), (10, 2094588), (12, 1745490), (15, 1396392), (18, 1163660), (20, 1047294), (24, 872745), (30, 698196), (36, 581830), (40, 523647), (45, 465464), (60, 349098), (72, 290915), (83, 252360), (90, 232732), (120, 174549), (166, 126180), (180, 116366), (249, 84120), (332, 63090), (360, 58183), (415, 50472), (498, 42060), (664, 31545), (701, 29880), (747, 28040), (830, 25236), (996, 21030), (1245, 16824), (1402, 14940), (1494, 14020), (1660, 12618), (1992, 10515), (2103, 9960), (2490, 8412), (2804, 7470), (2988, 7010), (3320, 6309), (3505, 5976), (3735, 5608), (4206, 4980)]