18413915

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{113}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 25280640

約数和(自身を除く): 6866725

約数列:

[1, 5, 13, 23, 65, 109, 113, 115, 299, 545, 565, 1417, 1469, 1495, 2507, 2599, 7085, 7345, 12317, 12535, 12995, 32591, 33787, 61585, 160121, 162955, 168935, 283291, 800605, 1416455, 3682783, 18413915]

約数ペア:

[(1, 18413915), (5, 3682783), (13, 1416455), (23, 800605), (65, 283291), (109, 168935), (113, 162955), (115, 160121), (299, 61585), (545, 33787), (565, 32591), (1417, 12995), (1469, 12535), (1495, 12317), (2507, 7345), (2599, 7085)]