21528810

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5563}}^1$

素因数の和:5619

約数の個数: 48

約数和(自身を含む): 57286944

約数和(自身を除く): 35758134

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5563, 11126, 16689, 27815, 33378, 50067, 55630, 83445, 100134, 166890, 239209, 250335, 478418, 500670, 717627, 1196045, 1435254, 2152881, 2392090, 3588135, 4305762, 7176270, 10764405, 21528810]

約数ペア:

[(1, 21528810), (2, 10764405), (3, 7176270), (5, 4305762), (6, 3588135), (9, 2392090), (10, 2152881), (15, 1435254), (18, 1196045), (30, 717627), (43, 500670), (45, 478418), (86, 250335), (90, 239209), (129, 166890), (215, 100134), (258, 83445), (387, 55630), (430, 50067), (645, 33378), (774, 27815), (1290, 16689), (1935, 11126), (3870, 5563)]