19645724

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:318

約数の個数: 48

約数和(自身を含む): 40877760

約数和(自身を除く): 21232036

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 109, 157, 164, 218, 287, 314, 436, 574, 628, 763, 1099, 1148, 1526, 2198, 3052, 4396, 4469, 6437, 8938, 12874, 17113, 17876, 25748, 31283, 34226, 45059, 62566, 68452, 90118, 119791, 125132, 180236, 239582, 479164, 701633, 1403266, 2806532, 4911431, 9822862, 19645724]

約数ペア:

[(1, 19645724), (2, 9822862), (4, 4911431), (7, 2806532), (14, 1403266), (28, 701633), (41, 479164), (82, 239582), (109, 180236), (157, 125132), (164, 119791), (218, 90118), (287, 68452), (314, 62566), (436, 45059), (574, 34226), (628, 31283), (763, 25748), (1099, 17876), (1148, 17113), (1526, 12874), (2198, 8938), (3052, 6437), (4396, 4469)]