19912676

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 41731200

約数和(自身を除く): 21818524

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 137, 179, 203, 274, 358, 406, 548, 716, 812, 959, 1253, 1918, 2506, 3836, 3973, 5012, 5191, 7946, 10382, 15892, 20764, 24523, 27811, 36337, 49046, 55622, 72674, 98092, 111244, 145348, 171661, 343322, 686644, 711167, 1422334, 2844668, 4978169, 9956338, 19912676]

約数ペア:

[(1, 19912676), (2, 9956338), (4, 4978169), (7, 2844668), (14, 1422334), (28, 711167), (29, 686644), (58, 343322), (116, 171661), (137, 145348), (179, 111244), (203, 98092), (274, 72674), (358, 55622), (406, 49046), (548, 36337), (716, 27811), (812, 24523), (959, 20764), (1253, 15892), (1918, 10382), (2506, 7946), (3836, 5191), (3973, 5012)]