210837980

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{509}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 449820000

約数和(自身を除く): 238982020

約数列:

[1, 2, 4, 5, 10, 20, 139, 149, 278, 298, 509, 556, 596, 695, 745, 1018, 1390, 1490, 2036, 2545, 2780, 2980, 5090, 10180, 20711, 41422, 70751, 75841, 82844, 103555, 141502, 151682, 207110, 283004, 303364, 353755, 379205, 414220, 707510, 758410, 1415020, 1516820, 10541899, 21083798, 42167596, 52709495, 105418990, 210837980]

約数ペア:

[(1, 210837980), (2, 105418990), (4, 52709495), (5, 42167596), (10, 21083798), (20, 10541899), (139, 1516820), (149, 1415020), (278, 758410), (298, 707510), (509, 414220), (556, 379205), (596, 353755), (695, 303364), (745, 283004), (1018, 207110), (1390, 151682), (1490, 141502), (2036, 103555), (2545, 82844), (2780, 75841), (2980, 70751), (5090, 41422), (10180, 20711)]