221401684

素因数分解:

$2^2\times 7^1\times {\mathrm{389}}^1\times {\mathrm{20327}}^1$

素因数の和:20727

約数の個数: 24

約数和(自身を含む): 443963520

約数和(自身を除く): 222561836

約数列:

[1, 2, 4, 7, 14, 28, 389, 778, 1556, 2723, 5446, 10892, 20327, 40654, 81308, 142289, 284578, 569156, 7907203, 15814406, 31628812, 55350421, 110700842, 221401684]

約数ペア:

[(1, 221401684), (2, 110700842), (4, 55350421), (7, 31628812), (14, 15814406), (28, 7907203), (389, 569156), (778, 284578), (1556, 142289), (2723, 81308), (5446, 40654), (10892, 20327)]