81845840

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{24953}}^1$

素因数の和:25007

約数の個数: 40

約数和(自身を含む): 194940648

約数和(自身を除く): 113094808

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 24953, 49906, 99812, 124765, 199624, 249530, 399248, 499060, 998120, 1023073, 1996240, 2046146, 4092292, 5115365, 8184584, 10230730, 16369168, 20461460, 40922920, 81845840]

約数ペア:

[(1, 81845840), (2, 40922920), (4, 20461460), (5, 16369168), (8, 10230730), (10, 8184584), (16, 5115365), (20, 4092292), (40, 2046146), (41, 1996240), (80, 1023073), (82, 998120), (164, 499060), (205, 399248), (328, 249530), (410, 199624), (656, 124765), (820, 99812), (1640, 49906), (3280, 24953)]