21957345

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3967}}^1$

素因数の和:4022

約数の個数: 32

約数和(自身を含む): 39997440

約数和(自身を除く): 18040095

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 3967, 5535, 11901, 19835, 35703, 59505, 107109, 162647, 178515, 487941, 535545, 813235, 1463823, 2439705, 4391469, 7319115, 21957345]

約数ペア:

[(1, 21957345), (3, 7319115), (5, 4391469), (9, 2439705), (15, 1463823), (27, 813235), (41, 535545), (45, 487941), (123, 178515), (135, 162647), (205, 107109), (369, 59505), (615, 35703), (1107, 19835), (1845, 11901), (3967, 5535)]