51998980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{3329}}^1$

素因数の和:3420

約数の個数: 48

約数和(自身を含む): 120839040

約数和(自身を除く): 68840060

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 3124, 3329, 3905, 6658, 7810, 13316, 15620, 16645, 33290, 36619, 66580, 73238, 146476, 183095, 236359, 366190, 472718, 732380, 945436, 1181795, 2363590, 2599949, 4727180, 5199898, 10399796, 12999745, 25999490, 51998980]

約数ペア:

[(1, 51998980), (2, 25999490), (4, 12999745), (5, 10399796), (10, 5199898), (11, 4727180), (20, 2599949), (22, 2363590), (44, 1181795), (55, 945436), (71, 732380), (110, 472718), (142, 366190), (220, 236359), (284, 183095), (355, 146476), (710, 73238), (781, 66580), (1420, 36619), (1562, 33290), (3124, 16645), (3329, 15620), (3905, 13316), (6658, 7810)]