21020616

素因数分解:

$2^3\times 3^2\times {\mathrm{181}}^1\times {\mathrm{1613}}^1$

素因数の和:1806

約数の個数: 48

約数和(自身を含む): 57280860

約数和(自身を除く): 36260244

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 181, 362, 543, 724, 1086, 1448, 1613, 1629, 2172, 3226, 3258, 4344, 4839, 6452, 6516, 9678, 12904, 13032, 14517, 19356, 29034, 38712, 58068, 116136, 291953, 583906, 875859, 1167812, 1751718, 2335624, 2627577, 3503436, 5255154, 7006872, 10510308, 21020616]

約数ペア:

[(1, 21020616), (2, 10510308), (3, 7006872), (4, 5255154), (6, 3503436), (8, 2627577), (9, 2335624), (12, 1751718), (18, 1167812), (24, 875859), (36, 583906), (72, 291953), (181, 116136), (362, 58068), (543, 38712), (724, 29034), (1086, 19356), (1448, 14517), (1613, 13032), (1629, 12904), (2172, 9678), (3226, 6516), (3258, 6452), (4344, 4839)]