20157188312

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{419}}^1\times {\mathrm{316499}}^1$

素因数の和:316943

約数の個数: 32

約数和(自身を含む): 39879000000

約数和(自身を除く): 19721811688

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 419, 838, 1676, 3352, 7961, 15922, 31844, 63688, 316499, 632998, 1265996, 2531992, 6013481, 12026962, 24053924, 48107848, 132613081, 265226162, 530452324, 1060904648, 2519648539, 5039297078, 10078594156, 20157188312]

約数ペア:

[(1, 20157188312), (2, 10078594156), (4, 5039297078), (8, 2519648539), (19, 1060904648), (38, 530452324), (76, 265226162), (152, 132613081), (419, 48107848), (838, 24053924), (1676, 12026962), (3352, 6013481), (7961, 2531992), (15922, 1265996), (31844, 632998), (63688, 316499)]