21801195

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{449}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 19476405

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 83, 117, 195, 249, 415, 449, 585, 747, 1079, 1245, 1347, 2245, 3237, 3735, 4041, 5395, 5837, 6735, 9711, 16185, 17511, 20205, 29185, 37267, 48555, 52533, 87555, 111801, 186335, 262665, 335403, 484471, 559005, 1453413, 1677015, 2422355, 4360239, 7267065, 21801195]

約数ペア:

[(1, 21801195), (3, 7267065), (5, 4360239), (9, 2422355), (13, 1677015), (15, 1453413), (39, 559005), (45, 484471), (65, 335403), (83, 262665), (117, 186335), (195, 111801), (249, 87555), (415, 52533), (449, 48555), (585, 37267), (747, 29185), (1079, 20205), (1245, 17511), (1347, 16185), (2245, 9711), (3237, 6735), (3735, 5837), (4041, 5395)]