1640185839

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{173}}^1\times {\mathrm{401}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 2487910464

約数和(自身を除く): 847724625

約数列:

[1, 3, 9, 37, 71, 111, 173, 213, 333, 401, 519, 639, 1203, 1557, 2627, 3609, 6401, 7881, 12283, 14837, 19203, 23643, 28471, 36849, 44511, 57609, 69373, 85413, 110547, 133533, 208119, 256239, 454471, 624357, 1053427, 1363413, 2566801, 3160281, 4090239, 4925483, 7700403, 9480843, 14776449, 23101209, 44329347, 182242871, 546728613, 1640185839]

約数ペア:

[(1, 1640185839), (3, 546728613), (9, 182242871), (37, 44329347), (71, 23101209), (111, 14776449), (173, 9480843), (213, 7700403), (333, 4925483), (401, 4090239), (519, 3160281), (639, 2566801), (1203, 1363413), (1557, 1053427), (2627, 624357), (3609, 454471), (6401, 256239), (7881, 208119), (12283, 133533), (14837, 110547), (19203, 85413), (23643, 69373), (28471, 57609), (36849, 44511)]