20728410

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{241}}^1$

素因数の和:359

約数の個数: 64

約数和(自身を含む): 51853824

約数和(自身を除く): 31125414

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 47, 61, 94, 122, 141, 183, 235, 241, 282, 305, 366, 470, 482, 610, 705, 723, 915, 1205, 1410, 1446, 1830, 2410, 2867, 3615, 5734, 7230, 8601, 11327, 14335, 14701, 17202, 22654, 28670, 29402, 33981, 43005, 44103, 56635, 67962, 73505, 86010, 88206, 113270, 147010, 169905, 220515, 339810, 441030, 690947, 1381894, 2072841, 3454735, 4145682, 6909470, 10364205, 20728410]

約数ペア:

[(1, 20728410), (2, 10364205), (3, 6909470), (5, 4145682), (6, 3454735), (10, 2072841), (15, 1381894), (30, 690947), (47, 441030), (61, 339810), (94, 220515), (122, 169905), (141, 147010), (183, 113270), (235, 88206), (241, 86010), (282, 73505), (305, 67962), (366, 56635), (470, 44103), (482, 43005), (610, 33981), (705, 29402), (723, 28670), (915, 22654), (1205, 17202), (1410, 14701), (1446, 14335), (1830, 11327), (2410, 8601), (2867, 7230), (3615, 5734)]