20035180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{487}}^1$

素因数の和:535

約数の個数: 72

約数和(自身を含む): 49067424

約数和(自身を除く): 29032244

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 121, 170, 187, 220, 242, 340, 374, 484, 487, 605, 748, 935, 974, 1210, 1870, 1948, 2057, 2420, 2435, 3740, 4114, 4870, 5357, 8228, 8279, 9740, 10285, 10714, 16558, 20570, 21428, 26785, 33116, 41140, 41395, 53570, 58927, 82790, 91069, 107140, 117854, 165580, 182138, 235708, 294635, 364276, 455345, 589270, 910690, 1001759, 1178540, 1821380, 2003518, 4007036, 5008795, 10017590, 20035180]

約数ペア:

[(1, 20035180), (2, 10017590), (4, 5008795), (5, 4007036), (10, 2003518), (11, 1821380), (17, 1178540), (20, 1001759), (22, 910690), (34, 589270), (44, 455345), (55, 364276), (68, 294635), (85, 235708), (110, 182138), (121, 165580), (170, 117854), (187, 107140), (220, 91069), (242, 82790), (340, 58927), (374, 53570), (484, 41395), (487, 41140), (605, 33116), (748, 26785), (935, 21428), (974, 20570), (1210, 16558), (1870, 10714), (1948, 10285), (2057, 9740), (2420, 8279), (2435, 8228), (3740, 5357), (4114, 4870)]