2019990021

素因数分解:

$3^1\times 7^1\times {\mathrm{59}}^1\times {\mathrm{557}}^1\times {\mathrm{2927}}^1$

素因数の和:3553

約数の個数: 32

約数和(自身を含む): 3136942080

約数和(自身を除く): 1116952059

約数列:

[1, 3, 7, 21, 59, 177, 413, 557, 1239, 1671, 2927, 3899, 8781, 11697, 20489, 32863, 61467, 98589, 172693, 230041, 518079, 690123, 1208851, 1630339, 3626553, 4891017, 11412373, 34237119, 96190001, 288570003, 673330007, 2019990021]

約数ペア:

[(1, 2019990021), (3, 673330007), (7, 288570003), (21, 96190001), (59, 34237119), (177, 11412373), (413, 4891017), (557, 3626553), (1239, 1630339), (1671, 1208851), (2927, 690123), (3899, 518079), (8781, 230041), (11697, 172693), (20489, 98589), (32863, 61467)]