20903490

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{8009}}^1$

素因数の和:8051

約数の個数: 48

約数和(自身を含む): 56230200

約数和(自身を除く): 35326710

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 29, 30, 45, 58, 87, 90, 145, 174, 261, 290, 435, 522, 870, 1305, 2610, 8009, 16018, 24027, 40045, 48054, 72081, 80090, 120135, 144162, 232261, 240270, 360405, 464522, 696783, 720810, 1161305, 1393566, 2090349, 2322610, 3483915, 4180698, 6967830, 10451745, 20903490]

約数ペア:

[(1, 20903490), (2, 10451745), (3, 6967830), (5, 4180698), (6, 3483915), (9, 2322610), (10, 2090349), (15, 1393566), (18, 1161305), (29, 720810), (30, 696783), (45, 464522), (58, 360405), (87, 240270), (90, 232261), (145, 144162), (174, 120135), (261, 80090), (290, 72081), (435, 48054), (522, 40045), (870, 24027), (1305, 16018), (2610, 8009)]