2189240

素因数分解:

$2^3\times 5^1\times {\mathrm{229}}^1\times {\mathrm{239}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 4968000

約数和(自身を除く): 2778760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 229, 239, 458, 478, 916, 956, 1145, 1195, 1832, 1912, 2290, 2390, 4580, 4780, 9160, 9560, 54731, 109462, 218924, 273655, 437848, 547310, 1094620, 2189240]

約数ペア:

[(1, 2189240), (2, 1094620), (4, 547310), (5, 437848), (8, 273655), (10, 218924), (20, 109462), (40, 54731), (229, 9560), (239, 9160), (458, 4780), (478, 4580), (916, 2390), (956, 2290), (1145, 1912), (1195, 1832)]