21723104

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{661}}^1$

素因数の和:763

約数の個数: 48

約数和(自身を含む): 46710720

約数和(自身を除く): 24987616

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 79, 104, 158, 208, 316, 416, 632, 661, 1027, 1264, 1322, 2054, 2528, 2644, 4108, 5288, 8216, 8593, 10576, 16432, 17186, 21152, 32864, 34372, 52219, 68744, 104438, 137488, 208876, 274976, 417752, 678847, 835504, 1357694, 1671008, 2715388, 5430776, 10861552, 21723104]

約数ペア:

[(1, 21723104), (2, 10861552), (4, 5430776), (8, 2715388), (13, 1671008), (16, 1357694), (26, 835504), (32, 678847), (52, 417752), (79, 274976), (104, 208876), (158, 137488), (208, 104438), (316, 68744), (416, 52219), (632, 34372), (661, 32864), (1027, 21152), (1264, 17186), (1322, 16432), (2054, 10576), (2528, 8593), (2644, 8216), (4108, 5288)]