20411457

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{229}}^1$

素因数の和:353

約数の個数: 32

約数和(自身を含む): 31044480

約数和(自身を除く): 10633023

約数列:

[1, 3, 11, 33, 37, 73, 111, 219, 229, 407, 687, 803, 1221, 2409, 2519, 2701, 7557, 8103, 8473, 16717, 25419, 29711, 50151, 89133, 93203, 183887, 279609, 551661, 618529, 1855587, 6803819, 20411457]

約数ペア:

[(1, 20411457), (3, 6803819), (11, 1855587), (33, 618529), (37, 551661), (73, 279609), (111, 183887), (219, 93203), (229, 89133), (407, 50151), (687, 29711), (803, 25419), (1221, 16717), (2409, 8473), (2519, 8103), (2701, 7557)]