18418340

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{487}}^1$

素因数の和:588

約数の個数: 48

約数和(自身を含む): 40664064

約数和(自身を除く): 22245724

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 487, 610, 620, 974, 1220, 1891, 1948, 2435, 3782, 4870, 7564, 9455, 9740, 15097, 18910, 29707, 30194, 37820, 59414, 60388, 75485, 118828, 148535, 150970, 297070, 301940, 594140, 920917, 1841834, 3683668, 4604585, 9209170, 18418340]

約数ペア:

[(1, 18418340), (2, 9209170), (4, 4604585), (5, 3683668), (10, 1841834), (20, 920917), (31, 594140), (61, 301940), (62, 297070), (122, 150970), (124, 148535), (155, 118828), (244, 75485), (305, 60388), (310, 59414), (487, 37820), (610, 30194), (620, 29707), (974, 18910), (1220, 15097), (1891, 9740), (1948, 9455), (2435, 7564), (3782, 4870)]