21123652

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:256

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 20809148

約数列:

[1, 2, 4, 11, 22, 44, 59, 79, 103, 118, 158, 206, 236, 316, 412, 649, 869, 1133, 1298, 1738, 2266, 2596, 3476, 4532, 4661, 6077, 8137, 9322, 12154, 16274, 18644, 24308, 32548, 51271, 66847, 89507, 102542, 133694, 179014, 205084, 267388, 358028, 480083, 960166, 1920332, 5280913, 10561826, 21123652]

約数ペア:

[(1, 21123652), (2, 10561826), (4, 5280913), (11, 1920332), (22, 960166), (44, 480083), (59, 358028), (79, 267388), (103, 205084), (118, 179014), (158, 133694), (206, 102542), (236, 89507), (316, 66847), (412, 51271), (649, 32548), (869, 24308), (1133, 18644), (1298, 16274), (1738, 12154), (2266, 9322), (2596, 8137), (3476, 6077), (4532, 4661)]