789898221

素因数分解:

$3^2\times 7^1\times {\mathrm{401}}^1\times {\mathrm{31267}}^1$

素因数の和:31681

約数の個数: 24

約数和(自身を含む): 1307252544

約数和(自身を除く): 517354323

約数列:

[1, 3, 7, 9, 21, 63, 401, 1203, 2807, 3609, 8421, 25263, 31267, 93801, 218869, 281403, 656607, 1969821, 12538067, 37614201, 87766469, 112842603, 263299407, 789898221]

約数ペア:

[(1, 789898221), (3, 263299407), (7, 112842603), (9, 87766469), (21, 37614201), (63, 12538067), (401, 1969821), (1203, 656607), (2807, 281403), (3609, 218869), (8421, 93801), (25263, 31267)]