21353886

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{587}}^1$

素因数の和:685

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 27078498

約数列:

[1, 2, 3, 6, 9, 18, 43, 47, 86, 94, 129, 141, 258, 282, 387, 423, 587, 774, 846, 1174, 1761, 2021, 3522, 4042, 5283, 6063, 10566, 12126, 18189, 25241, 27589, 36378, 50482, 55178, 75723, 82767, 151446, 165534, 227169, 248301, 454338, 496602, 1186327, 2372654, 3558981, 7117962, 10676943, 21353886]

約数ペア:

[(1, 21353886), (2, 10676943), (3, 7117962), (6, 3558981), (9, 2372654), (18, 1186327), (43, 496602), (47, 454338), (86, 248301), (94, 227169), (129, 165534), (141, 151446), (258, 82767), (282, 75723), (387, 55178), (423, 50482), (587, 36378), (774, 27589), (846, 25241), (1174, 18189), (1761, 12126), (2021, 10566), (3522, 6063), (4042, 5283)]