21742240

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10453}}^1$

素因数の和:10481

約数の個数: 48

約数和(自身を含む): 55322568

約数和(自身を除く): 33580328

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10453, 20906, 41812, 52265, 83624, 104530, 135889, 167248, 209060, 271778, 334496, 418120, 543556, 679445, 836240, 1087112, 1358890, 1672480, 2174224, 2717780, 4348448, 5435560, 10871120, 21742240]

約数ペア:

[(1, 21742240), (2, 10871120), (4, 5435560), (5, 4348448), (8, 2717780), (10, 2174224), (13, 1672480), (16, 1358890), (20, 1087112), (26, 836240), (32, 679445), (40, 543556), (52, 418120), (65, 334496), (80, 271778), (104, 209060), (130, 167248), (160, 135889), (208, 104530), (260, 83624), (416, 52265), (520, 41812), (1040, 20906), (2080, 10453)]