20649896

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{157}}^1\times {\mathrm{401}}^1$

素因数の和:605

約数の個数: 32

約数和(自身を含む): 40015080

約数和(自身を除く): 19365184

約数列:

[1, 2, 4, 8, 41, 82, 157, 164, 314, 328, 401, 628, 802, 1256, 1604, 3208, 6437, 12874, 16441, 25748, 32882, 51496, 62957, 65764, 125914, 131528, 251828, 503656, 2581237, 5162474, 10324948, 20649896]

約数ペア:

[(1, 20649896), (2, 10324948), (4, 5162474), (8, 2581237), (41, 503656), (82, 251828), (157, 131528), (164, 125914), (314, 65764), (328, 62957), (401, 51496), (628, 32882), (802, 25748), (1256, 16441), (1604, 12874), (3208, 6437)]