21477256

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{1999}}^1$

素因数の和:2101

約数の個数: 32

約数和(自身を含む): 43200000

約数和(自身を除く): 21722744

約数列:

[1, 2, 4, 8, 17, 34, 68, 79, 136, 158, 316, 632, 1343, 1999, 2686, 3998, 5372, 7996, 10744, 15992, 33983, 67966, 135932, 157921, 271864, 315842, 631684, 1263368, 2684657, 5369314, 10738628, 21477256]

約数ペア:

[(1, 21477256), (2, 10738628), (4, 5369314), (8, 2684657), (17, 1263368), (34, 631684), (68, 315842), (79, 271864), (136, 157921), (158, 135932), (316, 67966), (632, 33983), (1343, 15992), (1999, 10744), (2686, 7996), (3998, 5372)]