804720920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{6983}}^1$

素因数の和:7104

約数の個数: 64

約数和(自身を含む): 1880651520

約数和(自身を除く): 1075930600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 172, 215, 268, 335, 344, 430, 536, 670, 860, 1340, 1720, 2680, 2881, 5762, 6983, 11524, 13966, 14405, 23048, 27932, 28810, 34915, 55864, 57620, 69830, 115240, 139660, 279320, 300269, 467861, 600538, 935722, 1201076, 1501345, 1871444, 2339305, 2402152, 3002690, 3742888, 4678610, 6005380, 9357220, 12010760, 18714440, 20118023, 40236046, 80472092, 100590115, 160944184, 201180230, 402360460, 804720920]

約数ペア:

[(1, 804720920), (2, 402360460), (4, 201180230), (5, 160944184), (8, 100590115), (10, 80472092), (20, 40236046), (40, 20118023), (43, 18714440), (67, 12010760), (86, 9357220), (134, 6005380), (172, 4678610), (215, 3742888), (268, 3002690), (335, 2402152), (344, 2339305), (430, 1871444), (536, 1501345), (670, 1201076), (860, 935722), (1340, 600538), (1720, 467861), (2680, 300269), (2881, 279320), (5762, 139660), (6983, 115240), (11524, 69830), (13966, 57620), (14405, 55864), (23048, 34915), (27932, 28810)]