20556416

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{3917}}^1$

素因数の和:3972

約数の個数: 32

約数和(自身を含む): 41961780

約数和(自身を除く): 21405364

約数列:

[1, 2, 4, 8, 16, 32, 41, 64, 82, 128, 164, 328, 656, 1312, 2624, 3917, 5248, 7834, 15668, 31336, 62672, 125344, 160597, 250688, 321194, 501376, 642388, 1284776, 2569552, 5139104, 10278208, 20556416]

約数ペア:

[(1, 20556416), (2, 10278208), (4, 5139104), (8, 2569552), (16, 1284776), (32, 642388), (41, 501376), (64, 321194), (82, 250688), (128, 160597), (164, 125344), (328, 62672), (656, 31336), (1312, 15668), (2624, 7834), (3917, 5248)]