18439905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:198

約数の個数: 64

約数和(自身を含む): 34670592

約数和(自身を除く): 16230687

約数列:

[1, 3, 5, 11, 15, 23, 33, 43, 55, 69, 113, 115, 129, 165, 215, 253, 339, 345, 473, 565, 645, 759, 989, 1243, 1265, 1419, 1695, 2365, 2599, 2967, 3729, 3795, 4859, 4945, 6215, 7095, 7797, 10879, 12995, 14577, 14835, 18645, 24295, 28589, 32637, 38985, 53449, 54395, 72885, 85767, 111757, 142945, 160347, 163185, 267245, 335271, 428835, 558785, 801735, 1229327, 1676355, 3687981, 6146635, 18439905]

約数ペア:

[(1, 18439905), (3, 6146635), (5, 3687981), (11, 1676355), (15, 1229327), (23, 801735), (33, 558785), (43, 428835), (55, 335271), (69, 267245), (113, 163185), (115, 160347), (129, 142945), (165, 111757), (215, 85767), (253, 72885), (339, 54395), (345, 53449), (473, 38985), (565, 32637), (645, 28589), (759, 24295), (989, 18645), (1243, 14835), (1265, 14577), (1419, 12995), (1695, 10879), (2365, 7797), (2599, 7095), (2967, 6215), (3729, 4945), (3795, 4859)]