21015717304

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{315703}}^1$

素因数の和:315919

約数の個数: 32

約数和(自身を含む): 40403797920

約数和(自身を除く): 19388080616

約数列:

[1, 2, 4, 8, 53, 106, 157, 212, 314, 424, 628, 1256, 8321, 16642, 33284, 66568, 315703, 631406, 1262812, 2525624, 16732259, 33464518, 49565371, 66929036, 99130742, 133858072, 198261484, 396522968, 2626964663, 5253929326, 10507858652, 21015717304]

約数ペア:

[(1, 21015717304), (2, 10507858652), (4, 5253929326), (8, 2626964663), (53, 396522968), (106, 198261484), (157, 133858072), (212, 99130742), (314, 66929036), (424, 49565371), (628, 33464518), (1256, 16732259), (8321, 2525624), (16642, 1262812), (33284, 631406), (66568, 315703)]