21410896

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1303}}^1$

素因数の和:1403

約数の個数: 40

約数和(自身を含む): 45274880

約数和(自身を除く): 23863984

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 79, 104, 158, 208, 316, 632, 1027, 1264, 1303, 2054, 2606, 4108, 5212, 8216, 10424, 16432, 16939, 20848, 33878, 67756, 102937, 135512, 205874, 271024, 411748, 823496, 1338181, 1646992, 2676362, 5352724, 10705448, 21410896]

約数ペア:

[(1, 21410896), (2, 10705448), (4, 5352724), (8, 2676362), (13, 1646992), (16, 1338181), (26, 823496), (52, 411748), (79, 271024), (104, 205874), (158, 135512), (208, 102937), (316, 67756), (632, 33878), (1027, 20848), (1264, 16939), (1303, 16432), (2054, 10424), (2606, 8216), (4108, 5212)]