21945480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4253}}^1$

素因数の和:4310

約数の個数: 64

約数和(自身を含む): 67383360

約数和(自身を除く): 45437880

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4253, 5160, 8506, 12759, 17012, 21265, 25518, 34024, 42530, 51036, 63795, 85060, 102072, 127590, 170120, 182879, 255180, 365758, 510360, 548637, 731516, 914395, 1097274, 1463032, 1828790, 2194548, 2743185, 3657580, 4389096, 5486370, 7315160, 10972740, 21945480]

約数ペア:

[(1, 21945480), (2, 10972740), (3, 7315160), (4, 5486370), (5, 4389096), (6, 3657580), (8, 2743185), (10, 2194548), (12, 1828790), (15, 1463032), (20, 1097274), (24, 914395), (30, 731516), (40, 548637), (43, 510360), (60, 365758), (86, 255180), (120, 182879), (129, 170120), (172, 127590), (215, 102072), (258, 85060), (344, 63795), (430, 51036), (516, 42530), (645, 34024), (860, 25518), (1032, 21265), (1290, 17012), (1720, 12759), (2580, 8506), (4253, 5160)]