21690080

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4373}}^1$

素因数の和:4419

約数の個数: 48

約数和(自身を含む): 52907904

約数和(自身を除く): 31217824

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4373, 4960, 8746, 17492, 21865, 34984, 43730, 69968, 87460, 135563, 139936, 174920, 271126, 349840, 542252, 677815, 699680, 1084504, 1355630, 2169008, 2711260, 4338016, 5422520, 10845040, 21690080]

約数ペア:

[(1, 21690080), (2, 10845040), (4, 5422520), (5, 4338016), (8, 2711260), (10, 2169008), (16, 1355630), (20, 1084504), (31, 699680), (32, 677815), (40, 542252), (62, 349840), (80, 271126), (124, 174920), (155, 139936), (160, 135563), (248, 87460), (310, 69968), (496, 43730), (620, 34984), (992, 21865), (1240, 17492), (2480, 8746), (4373, 4960)]