21561810

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{31249}}^1$

素因数の和:31282

約数の個数: 32

約数和(自身を含む): 54000000

約数和(自身を除く): 32438190

約数列:

[1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690, 31249, 62498, 93747, 156245, 187494, 312490, 468735, 718727, 937470, 1437454, 2156181, 3593635, 4312362, 7187270, 10780905, 21561810]

約数ペア:

[(1, 21561810), (2, 10780905), (3, 7187270), (5, 4312362), (6, 3593635), (10, 2156181), (15, 1437454), (23, 937470), (30, 718727), (46, 468735), (69, 312490), (115, 187494), (138, 156245), (230, 93747), (345, 62498), (690, 31249)]