18883960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:296

約数の個数: 64

約数和(自身を含む): 44593920

約数和(自身を除く): 25709960

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 97, 124, 155, 157, 194, 248, 310, 314, 388, 485, 620, 628, 776, 785, 970, 1240, 1256, 1570, 1940, 3007, 3140, 3880, 4867, 6014, 6280, 9734, 12028, 15035, 15229, 19468, 24056, 24335, 30070, 30458, 38936, 48670, 60140, 60916, 76145, 97340, 120280, 121832, 152290, 194680, 304580, 472099, 609160, 944198, 1888396, 2360495, 3776792, 4720990, 9441980, 18883960]

約数ペア:

[(1, 18883960), (2, 9441980), (4, 4720990), (5, 3776792), (8, 2360495), (10, 1888396), (20, 944198), (31, 609160), (40, 472099), (62, 304580), (97, 194680), (124, 152290), (155, 121832), (157, 120280), (194, 97340), (248, 76145), (310, 60916), (314, 60140), (388, 48670), (485, 38936), (620, 30458), (628, 30070), (776, 24335), (785, 24056), (970, 19468), (1240, 15229), (1256, 15035), (1570, 12028), (1940, 9734), (3007, 6280), (3140, 6014), (3880, 4867)]