20181275140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1805123}}^1$

素因数の和:1805188

約数の個数: 48

約数和(自身を含む): 46702168128

約数和(自身を除く): 26520892988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 43, 52, 65, 86, 130, 172, 215, 260, 430, 559, 860, 1118, 2236, 2795, 5590, 11180, 1805123, 3610246, 7220492, 9025615, 18051230, 23466599, 36102460, 46933198, 77620289, 93866396, 117332995, 155240578, 234665990, 310481156, 388101445, 469331980, 776202890, 1009063757, 1552405780, 2018127514, 4036255028, 5045318785, 10090637570, 20181275140]

約数ペア:

[(1, 20181275140), (2, 10090637570), (4, 5045318785), (5, 4036255028), (10, 2018127514), (13, 1552405780), (20, 1009063757), (26, 776202890), (43, 469331980), (52, 388101445), (65, 310481156), (86, 234665990), (130, 155240578), (172, 117332995), (215, 93866396), (260, 77620289), (430, 46933198), (559, 36102460), (860, 23466599), (1118, 18051230), (2236, 9025615), (2795, 7220492), (5590, 3610246), (11180, 1805123)]