22121780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{887}}^1$

素因数の和:968

約数の個数: 48

約数和(自身を含む): 49230720

約数和(自身を除く): 27108940

約数列:

[1, 2, 4, 5, 10, 20, 29, 43, 58, 86, 116, 145, 172, 215, 290, 430, 580, 860, 887, 1247, 1774, 2494, 3548, 4435, 4988, 6235, 8870, 12470, 17740, 24940, 25723, 38141, 51446, 76282, 102892, 128615, 152564, 190705, 257230, 381410, 514460, 762820, 1106089, 2212178, 4424356, 5530445, 11060890, 22121780]

約数ペア:

[(1, 22121780), (2, 11060890), (4, 5530445), (5, 4424356), (10, 2212178), (20, 1106089), (29, 762820), (43, 514460), (58, 381410), (86, 257230), (116, 190705), (145, 152564), (172, 128615), (215, 102892), (290, 76282), (430, 51446), (580, 38141), (860, 25723), (887, 24940), (1247, 17740), (1774, 12470), (2494, 8870), (3548, 6235), (4435, 4988)]