21152803973

素因数分解:

$7^2\times {\mathrm{47}}^1\times {\mathrm{137}}^1\times {\mathrm{67043}}^1$

素因数の和:67241

約数の個数: 24

約数和(自身を含む): 25313668992

約数和(自身を除く): 4160865019

約数列:

[1, 7, 47, 49, 137, 329, 959, 2303, 6439, 6713, 45073, 67043, 315511, 469301, 3151021, 3285107, 9184891, 22057147, 64294237, 154400029, 431689877, 450059659, 3021829139, 21152803973]

約数ペア:

[(1, 21152803973), (7, 3021829139), (47, 450059659), (49, 431689877), (137, 154400029), (329, 64294237), (959, 22057147), (2303, 9184891), (6439, 3285107), (6713, 3151021), (45073, 469301), (67043, 315511)]