16515980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{457}}^1$

素因数の和:618

約数の個数: 48

約数和(自身を含む): 37702560

約数和(自身を除く): 21186580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 139, 260, 278, 457, 556, 695, 914, 1390, 1807, 1828, 2285, 2780, 3614, 4570, 5941, 7228, 9035, 9140, 11882, 18070, 23764, 29705, 36140, 59410, 63523, 118820, 127046, 254092, 317615, 635230, 825799, 1270460, 1651598, 3303196, 4128995, 8257990, 16515980]

約数ペア:

[(1, 16515980), (2, 8257990), (4, 4128995), (5, 3303196), (10, 1651598), (13, 1270460), (20, 825799), (26, 635230), (52, 317615), (65, 254092), (130, 127046), (139, 118820), (260, 63523), (278, 59410), (457, 36140), (556, 29705), (695, 23764), (914, 18070), (1390, 11882), (1807, 9140), (1828, 9035), (2285, 7228), (2780, 5941), (3614, 4570)]