18995120

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13967}}^1$

素因数の和:13997

約数の個数: 40

約数和(自身を含む): 46764864

約数和(自身を除く): 27769744

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13967, 27934, 55868, 69835, 111736, 139670, 223472, 237439, 279340, 474878, 558680, 949756, 1117360, 1187195, 1899512, 2374390, 3799024, 4748780, 9497560, 18995120]

約数ペア:

[(1, 18995120), (2, 9497560), (4, 4748780), (5, 3799024), (8, 2374390), (10, 1899512), (16, 1187195), (17, 1117360), (20, 949756), (34, 558680), (40, 474878), (68, 279340), (80, 237439), (85, 223472), (136, 139670), (170, 111736), (272, 69835), (340, 55868), (680, 27934), (1360, 13967)]