8666980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1997}}^1$

素因数の和:2044

約数の個数: 48

約数和(自身を含む): 21482496

約数和(自身を除く): 12815516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 1997, 2170, 3994, 4340, 7988, 9985, 13979, 19970, 27958, 39940, 55916, 61907, 69895, 123814, 139790, 247628, 279580, 309535, 433349, 619070, 866698, 1238140, 1733396, 2166745, 4333490, 8666980]

約数ペア:

[(1, 8666980), (2, 4333490), (4, 2166745), (5, 1733396), (7, 1238140), (10, 866698), (14, 619070), (20, 433349), (28, 309535), (31, 279580), (35, 247628), (62, 139790), (70, 123814), (124, 69895), (140, 61907), (155, 55916), (217, 39940), (310, 27958), (434, 19970), (620, 13979), (868, 9985), (1085, 7988), (1997, 4340), (2170, 3994)]