21919215

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{1229}}^1$

素因数の和:1307

約数の個数: 32

約数和(自身を含む): 37195200

約数和(自身を除く): 15275985

約数列:

[1, 3, 5, 15, 29, 41, 87, 123, 145, 205, 435, 615, 1189, 1229, 3567, 3687, 5945, 6145, 17835, 18435, 35641, 50389, 106923, 151167, 178205, 251945, 534615, 755835, 1461281, 4383843, 7306405, 21919215]

約数ペア:

[(1, 21919215), (3, 7306405), (5, 4383843), (15, 1461281), (29, 755835), (41, 534615), (87, 251945), (123, 178205), (145, 151167), (205, 106923), (435, 50389), (615, 35641), (1189, 18435), (1229, 17835), (3567, 6145), (3687, 5945)]