20047370

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{163}}^1\times {\mathrm{251}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 42402528

約数和(自身を除く): 22355158

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 163, 245, 251, 326, 490, 502, 815, 1141, 1255, 1630, 1757, 2282, 2510, 3514, 5705, 7987, 8785, 11410, 12299, 15974, 17570, 24598, 39935, 40913, 61495, 79870, 81826, 122990, 204565, 286391, 409130, 572782, 1431955, 2004737, 2863910, 4009474, 10023685, 20047370]

約数ペア:

[(1, 20047370), (2, 10023685), (5, 4009474), (7, 2863910), (10, 2004737), (14, 1431955), (35, 572782), (49, 409130), (70, 286391), (98, 204565), (163, 122990), (245, 81826), (251, 79870), (326, 61495), (490, 40913), (502, 39935), (815, 24598), (1141, 17570), (1255, 15974), (1630, 12299), (1757, 11410), (2282, 8785), (2510, 7987), (3514, 5705)]