490820

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 1185408

約数和(自身を除く): 694588

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 92, 97, 110, 115, 194, 220, 230, 253, 388, 460, 485, 506, 970, 1012, 1067, 1265, 1940, 2134, 2231, 2530, 4268, 4462, 5060, 5335, 8924, 10670, 11155, 21340, 22310, 24541, 44620, 49082, 98164, 122705, 245410, 490820]

約数ペア:

[(1, 490820), (2, 245410), (4, 122705), (5, 98164), (10, 49082), (11, 44620), (20, 24541), (22, 22310), (23, 21340), (44, 11155), (46, 10670), (55, 8924), (92, 5335), (97, 5060), (110, 4462), (115, 4268), (194, 2530), (220, 2231), (230, 2134), (253, 1940), (388, 1265), (460, 1067), (485, 1012), (506, 970)]