20698377

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 32796672

約数和(自身を除く): 12098295

約数列:

[1, 3, 7, 21, 47, 67, 141, 201, 313, 329, 469, 939, 987, 1407, 2191, 3149, 6573, 9447, 14711, 20971, 22043, 44133, 62913, 66129, 102977, 146797, 308931, 440391, 985637, 2956911, 6899459, 20698377]

約数ペア:

[(1, 20698377), (3, 6899459), (7, 2956911), (21, 985637), (47, 440391), (67, 308931), (141, 146797), (201, 102977), (313, 66129), (329, 62913), (469, 44133), (939, 22043), (987, 20971), (1407, 14711), (2191, 9447), (3149, 6573)]