21030904

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2621}}^1$

素因数の和:2703

約数の個数: 32

約数和(自身を含む): 42476400

約数和(自身を除く): 21445496

約数列:

[1, 2, 4, 8, 17, 34, 59, 68, 118, 136, 236, 472, 1003, 2006, 2621, 4012, 5242, 8024, 10484, 20968, 44557, 89114, 154639, 178228, 309278, 356456, 618556, 1237112, 2628863, 5257726, 10515452, 21030904]

約数ペア:

[(1, 21030904), (2, 10515452), (4, 5257726), (8, 2628863), (17, 1237112), (34, 618556), (59, 356456), (68, 309278), (118, 178228), (136, 154639), (236, 89114), (472, 44557), (1003, 20968), (2006, 10484), (2621, 8024), (4012, 5242)]