18213580

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{11827}}^1$

素因数の和:11854

約数の個数: 48

約数和(自身を含む): 47690496

約数和(自身を除く): 29476916

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 140, 154, 220, 308, 385, 770, 1540, 11827, 23654, 47308, 59135, 82789, 118270, 130097, 165578, 236540, 260194, 331156, 413945, 520388, 650485, 827890, 910679, 1300970, 1655780, 1821358, 2601940, 3642716, 4553395, 9106790, 18213580]

約数ペア:

[(1, 18213580), (2, 9106790), (4, 4553395), (5, 3642716), (7, 2601940), (10, 1821358), (11, 1655780), (14, 1300970), (20, 910679), (22, 827890), (28, 650485), (35, 520388), (44, 413945), (55, 331156), (70, 260194), (77, 236540), (110, 165578), (140, 130097), (154, 118270), (220, 82789), (308, 59135), (385, 47308), (770, 23654), (1540, 11827)]