21525615

素因数分解:

$3^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3889}}^1$

素因数の和:3944

約数の個数: 32

約数和(自身を含む): 39211200

約数和(自身を除く): 17685585

約数列:

[1, 3, 5, 9, 15, 27, 41, 45, 123, 135, 205, 369, 615, 1107, 1845, 3889, 5535, 11667, 19445, 35001, 58335, 105003, 159449, 175005, 478347, 525015, 797245, 1435041, 2391735, 4305123, 7175205, 21525615]

約数ペア:

[(1, 21525615), (3, 7175205), (5, 4305123), (9, 2391735), (15, 1435041), (27, 797245), (41, 525015), (45, 478347), (123, 175005), (135, 159449), (205, 105003), (369, 58335), (615, 35001), (1107, 19445), (1845, 11667), (3889, 5535)]