130311980

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{163}}^1\times {\mathrm{563}}^1$

素因数の和:806

約数の個数: 48

約数和(自身を含む): 279707904

約数和(自身を除く): 149395924

約数列:

[1, 2, 4, 5, 10, 20, 71, 142, 163, 284, 326, 355, 563, 652, 710, 815, 1126, 1420, 1630, 2252, 2815, 3260, 5630, 11260, 11573, 23146, 39973, 46292, 57865, 79946, 91769, 115730, 159892, 183538, 199865, 231460, 367076, 399730, 458845, 799460, 917690, 1835380, 6515599, 13031198, 26062396, 32577995, 65155990, 130311980]

約数ペア:

[(1, 130311980), (2, 65155990), (4, 32577995), (5, 26062396), (10, 13031198), (20, 6515599), (71, 1835380), (142, 917690), (163, 799460), (284, 458845), (326, 399730), (355, 367076), (563, 231460), (652, 199865), (710, 183538), (815, 159892), (1126, 115730), (1420, 91769), (1630, 79946), (2252, 57865), (2815, 46292), (3260, 39973), (5630, 23146), (11260, 11573)]