21765500

素因数分解:

$2^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{431}}^1$

素因数の和:551

約数の個数: 48

約数和(自身を含む): 48117888

約数和(自身を除く): 26352388

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 125, 202, 250, 404, 431, 500, 505, 862, 1010, 1724, 2020, 2155, 2525, 4310, 5050, 8620, 10100, 10775, 12625, 21550, 25250, 43100, 43531, 50500, 53875, 87062, 107750, 174124, 215500, 217655, 435310, 870620, 1088275, 2176550, 4353100, 5441375, 10882750, 21765500]

約数ペア:

[(1, 21765500), (2, 10882750), (4, 5441375), (5, 4353100), (10, 2176550), (20, 1088275), (25, 870620), (50, 435310), (100, 217655), (101, 215500), (125, 174124), (202, 107750), (250, 87062), (404, 53875), (431, 50500), (500, 43531), (505, 43100), (862, 25250), (1010, 21550), (1724, 12625), (2020, 10775), (2155, 10100), (2525, 8620), (4310, 5050)]