398919199

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{151}}^1\times {\mathrm{269}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 488540160

約数和(自身を除く): 89620961

約数列:

[1, 7, 23, 61, 151, 161, 269, 427, 1057, 1403, 1883, 3473, 6187, 9211, 9821, 16409, 24311, 40619, 43309, 64477, 114863, 211853, 284333, 377407, 934237, 1482971, 2477759, 2641849, 6539659, 17344313, 56988457, 398919199]

約数ペア:

[(1, 398919199), (7, 56988457), (23, 17344313), (61, 6539659), (151, 2641849), (161, 2477759), (269, 1482971), (427, 934237), (1057, 377407), (1403, 284333), (1883, 211853), (3473, 114863), (6187, 64477), (9211, 43309), (9821, 40619), (16409, 24311)]