21496650920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{809}}^1\times {\mathrm{34963}}^1$

素因数の和:35802

約数の個数: 64

約数和(自身を含む): 50977512000

約数和(自身を除く): 29480861080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 809, 1618, 3236, 4045, 6472, 8090, 15371, 16180, 30742, 32360, 34963, 61484, 69926, 76855, 122968, 139852, 153710, 174815, 279704, 307420, 349630, 614840, 664297, 699260, 1328594, 1398520, 2657188, 3321485, 5314376, 6642970, 13285940, 26571880, 28285067, 56570134, 113140268, 141425335, 226280536, 282850670, 537416273, 565701340, 1074832546, 1131402680, 2149665092, 2687081365, 4299330184, 5374162730, 10748325460, 21496650920]

約数ペア:

[(1, 21496650920), (2, 10748325460), (4, 5374162730), (5, 4299330184), (8, 2687081365), (10, 2149665092), (19, 1131402680), (20, 1074832546), (38, 565701340), (40, 537416273), (76, 282850670), (95, 226280536), (152, 141425335), (190, 113140268), (380, 56570134), (760, 28285067), (809, 26571880), (1618, 13285940), (3236, 6642970), (4045, 5314376), (6472, 3321485), (8090, 2657188), (15371, 1398520), (16180, 1328594), (30742, 699260), (32360, 664297), (34963, 614840), (61484, 349630), (69926, 307420), (76855, 279704), (122968, 174815), (139852, 153710)]