21673808

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1319}}^1$

素因数の和:1419

約数の個数: 40

約数和(自身を含む): 45830400

約数和(自身を除く): 24156592

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1264, 1319, 2054, 2638, 4108, 5276, 8216, 10552, 16432, 17147, 21104, 34294, 68588, 104201, 137176, 208402, 274352, 416804, 833608, 1354613, 1667216, 2709226, 5418452, 10836904, 21673808]

約数ペア:

[(1, 21673808), (2, 10836904), (4, 5418452), (8, 2709226), (13, 1667216), (16, 1354613), (26, 833608), (52, 416804), (79, 274352), (104, 208402), (158, 137176), (208, 104201), (316, 68588), (632, 34294), (1027, 21104), (1264, 17147), (1319, 16432), (2054, 10552), (2638, 8216), (4108, 5276)]