20636565

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^2\times {\mathrm{37}}^1\times {\mathrm{103}}^1$

素因数の和:186

約数の個数: 48

約数和(自身を含む): 36137088

約数和(自身を除く): 15500523

約数列:

[1, 3, 5, 15, 19, 37, 57, 95, 103, 111, 185, 285, 309, 361, 515, 555, 703, 1083, 1545, 1805, 1957, 2109, 3515, 3811, 5415, 5871, 9785, 10545, 11433, 13357, 19055, 29355, 37183, 40071, 57165, 66785, 72409, 111549, 185915, 200355, 217227, 362045, 557745, 1086135, 1375771, 4127313, 6878855, 20636565]

約数ペア:

[(1, 20636565), (3, 6878855), (5, 4127313), (15, 1375771), (19, 1086135), (37, 557745), (57, 362045), (95, 217227), (103, 200355), (111, 185915), (185, 111549), (285, 72409), (309, 66785), (361, 57165), (515, 40071), (555, 37183), (703, 29355), (1083, 19055), (1545, 13357), (1805, 11433), (1957, 10545), (2109, 9785), (3515, 5871), (3811, 5415)]