20674120

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{229}}^1$

素因数の和:338

約数の個数: 64

約数和(自身を含む): 48769200

約数和(自身を除く): 28095080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 61, 74, 122, 148, 185, 229, 244, 296, 305, 370, 458, 488, 610, 740, 916, 1145, 1220, 1480, 1832, 2257, 2290, 2440, 4514, 4580, 8473, 9028, 9160, 11285, 13969, 16946, 18056, 22570, 27938, 33892, 42365, 45140, 55876, 67784, 69845, 84730, 90280, 111752, 139690, 169460, 279380, 338920, 516853, 558760, 1033706, 2067412, 2584265, 4134824, 5168530, 10337060, 20674120]

約数ペア:

[(1, 20674120), (2, 10337060), (4, 5168530), (5, 4134824), (8, 2584265), (10, 2067412), (20, 1033706), (37, 558760), (40, 516853), (61, 338920), (74, 279380), (122, 169460), (148, 139690), (185, 111752), (229, 90280), (244, 84730), (296, 69845), (305, 67784), (370, 55876), (458, 45140), (488, 42365), (610, 33892), (740, 27938), (916, 22570), (1145, 18056), (1220, 16946), (1480, 13969), (1832, 11285), (2257, 9160), (2290, 9028), (2440, 8473), (4514, 4580)]