21297452

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{79}}^1\times {\mathrm{557}}^1$

素因数の和:662

約数の個数: 36

約数和(自身を含む): 41559840

約数和(自身を除く): 20262388

約数列:

[1, 2, 4, 11, 22, 44, 79, 121, 158, 242, 316, 484, 557, 869, 1114, 1738, 2228, 3476, 6127, 9559, 12254, 19118, 24508, 38236, 44003, 67397, 88006, 134794, 176012, 269588, 484033, 968066, 1936132, 5324363, 10648726, 21297452]

約数ペア:

[(1, 21297452), (2, 10648726), (4, 5324363), (11, 1936132), (22, 968066), (44, 484033), (79, 269588), (121, 176012), (158, 134794), (242, 88006), (316, 67397), (484, 44003), (557, 38236), (869, 24508), (1114, 19118), (1738, 12254), (2228, 9559), (3476, 6127)]