31920819

素因数分解:

$3^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{79}}^1\times {\mathrm{271}}^1$

素因数の和:431

約数の個数: 32

約数和(自身を含む): 50135040

約数和(自身を除く): 18214221

約数列:

[1, 3, 7, 21, 71, 79, 213, 237, 271, 497, 553, 813, 1491, 1659, 1897, 5609, 5691, 16827, 19241, 21409, 39263, 57723, 64227, 117789, 134687, 149863, 404061, 449589, 1520039, 4560117, 10640273, 31920819]

約数ペア:

[(1, 31920819), (3, 10640273), (7, 4560117), (21, 1520039), (71, 449589), (79, 404061), (213, 149863), (237, 134687), (271, 117789), (497, 64227), (553, 57723), (813, 39263), (1491, 21409), (1659, 19241), (1897, 16827), (5609, 5691)]