1640572020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{14087}}^1$

素因数の和:14749

約数の個数: 72

約数和(自身を含む): 4984447104

約数和(自身を除く): 3343875084

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 647, 1294, 1941, 2588, 3235, 3882, 5823, 6470, 7764, 9705, 11646, 12940, 14087, 19410, 23292, 28174, 29115, 38820, 42261, 56348, 58230, 70435, 84522, 116460, 126783, 140870, 169044, 211305, 253566, 281740, 422610, 507132, 633915, 845220, 1267830, 2535660, 9114289, 18228578, 27342867, 36457156, 45571445, 54685734, 82028601, 91142890, 109371468, 136714335, 164057202, 182285780, 273428670, 328114404, 410143005, 546857340, 820286010, 1640572020]

約数ペア:

[(1, 1640572020), (2, 820286010), (3, 546857340), (4, 410143005), (5, 328114404), (6, 273428670), (9, 182285780), (10, 164057202), (12, 136714335), (15, 109371468), (18, 91142890), (20, 82028601), (30, 54685734), (36, 45571445), (45, 36457156), (60, 27342867), (90, 18228578), (180, 9114289), (647, 2535660), (1294, 1267830), (1941, 845220), (2588, 633915), (3235, 507132), (3882, 422610), (5823, 281740), (6470, 253566), (7764, 211305), (9705, 169044), (11646, 140870), (12940, 126783), (14087, 116460), (19410, 84522), (23292, 70435), (28174, 58230), (29115, 56348), (38820, 42261)]