21821870

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{1213}}^1$

素因数の和:1484

約数の個数: 32

約数和(自身を含む): 45102528

約数和(自身を除く): 23280658

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 257, 514, 1213, 1285, 1799, 2426, 2570, 3598, 6065, 8491, 8995, 12130, 16982, 17990, 42455, 84910, 311741, 623482, 1558705, 2182187, 3117410, 4364374, 10910935, 21821870]

約数ペア:

[(1, 21821870), (2, 10910935), (5, 4364374), (7, 3117410), (10, 2182187), (14, 1558705), (35, 623482), (70, 311741), (257, 84910), (514, 42455), (1213, 17990), (1285, 16982), (1799, 12130), (2426, 8995), (2570, 8491), (3598, 6065)]