16578980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{421}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 38283840

約数和(自身を除く): 21704860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 179, 220, 358, 421, 716, 842, 895, 1684, 1790, 1969, 2105, 3580, 3938, 4210, 4631, 7876, 8420, 9262, 9845, 18524, 19690, 23155, 39380, 46310, 75359, 92620, 150718, 301436, 376795, 753590, 828949, 1507180, 1657898, 3315796, 4144745, 8289490, 16578980]

約数ペア:

[(1, 16578980), (2, 8289490), (4, 4144745), (5, 3315796), (10, 1657898), (11, 1507180), (20, 828949), (22, 753590), (44, 376795), (55, 301436), (110, 150718), (179, 92620), (220, 75359), (358, 46310), (421, 39380), (716, 23155), (842, 19690), (895, 18524), (1684, 9845), (1790, 9262), (1969, 8420), (2105, 7876), (3580, 4631), (3938, 4210)]