21747752

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2647}}^1$

素因数の和:2745

約数の個数: 32

約数和(自身を含む): 44486400

約数和(自身を除く): 22738648

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2647, 4108, 5294, 8216, 10588, 21176, 34411, 68822, 137644, 209113, 275288, 418226, 836452, 1672904, 2718469, 5436938, 10873876, 21747752]

約数ペア:

[(1, 21747752), (2, 10873876), (4, 5436938), (8, 2718469), (13, 1672904), (26, 836452), (52, 418226), (79, 275288), (104, 209113), (158, 137644), (316, 68822), (632, 34411), (1027, 21176), (2054, 10588), (2647, 8216), (4108, 5294)]