18701613

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{113}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 32438016

約数和(自身を除く): 13736403

約数列:

[1, 3, 7, 9, 21, 37, 63, 71, 111, 113, 213, 259, 333, 339, 497, 639, 777, 791, 1017, 1491, 2331, 2373, 2627, 4181, 4473, 7119, 7881, 8023, 12543, 18389, 23643, 24069, 29267, 37629, 55167, 56161, 72207, 87801, 165501, 168483, 263403, 296851, 505449, 890553, 2077957, 2671659, 6233871, 18701613]

約数ペア:

[(1, 18701613), (3, 6233871), (7, 2671659), (9, 2077957), (21, 890553), (37, 505449), (63, 296851), (71, 263403), (111, 168483), (113, 165501), (213, 87801), (259, 72207), (333, 56161), (339, 55167), (497, 37629), (639, 29267), (777, 24069), (791, 23643), (1017, 18389), (1491, 12543), (2331, 8023), (2373, 7881), (2627, 7119), (4181, 4473)]