20851360

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^4$

素因数の和:91

約数の個数: 60

約数和(自身を含む): 51998058

約数和(自身を除く): 31146698

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 361, 380, 608, 722, 760, 1444, 1520, 1805, 2888, 3040, 3610, 5776, 6859, 7220, 11552, 13718, 14440, 27436, 28880, 34295, 54872, 57760, 68590, 109744, 130321, 137180, 219488, 260642, 274360, 521284, 548720, 651605, 1042568, 1097440, 1303210, 2085136, 2606420, 4170272, 5212840, 10425680, 20851360]

約数ペア:

[(1, 20851360), (2, 10425680), (4, 5212840), (5, 4170272), (8, 2606420), (10, 2085136), (16, 1303210), (19, 1097440), (20, 1042568), (32, 651605), (38, 548720), (40, 521284), (76, 274360), (80, 260642), (95, 219488), (152, 137180), (160, 130321), (190, 109744), (304, 68590), (361, 57760), (380, 54872), (608, 34295), (722, 28880), (760, 27436), (1444, 14440), (1520, 13718), (1805, 11552), (2888, 7220), (3040, 6859), (3610, 5776)]