21000902512

素因数分解:

$2^4\times {\mathrm{4513}}^1\times {\mathrm{290839}}^1$

素因数の和:295360

約数の個数: 20

約数和(自身を含む): 40698404560

約数和(自身を除く): 19697502048

約数列:

[1, 2, 4, 8, 16, 4513, 9026, 18052, 36104, 72208, 290839, 581678, 1163356, 2326712, 4653424, 1312556407, 2625112814, 5250225628, 10500451256, 21000902512]

約数ペア:

[(1, 21000902512), (2, 10500451256), (4, 5250225628), (8, 2625112814), (16, 1312556407), (4513, 4653424), (9026, 2326712), (18052, 1163356), (36104, 581678), (72208, 290839)]