81787600

素因数分解:

$2^4\times 5^2\times {\mathrm{139}}^1\times {\mathrm{1471}}^1$

素因数の和:1628

約数の個数: 60

約数和(自身を含む): 198042880

約数和(自身を除く): 116255280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 139, 200, 278, 400, 556, 695, 1112, 1390, 1471, 2224, 2780, 2942, 3475, 5560, 5884, 6950, 7355, 11120, 11768, 13900, 14710, 23536, 27800, 29420, 36775, 55600, 58840, 73550, 117680, 147100, 204469, 294200, 408938, 588400, 817876, 1022345, 1635752, 2044690, 3271504, 4089380, 5111725, 8178760, 10223450, 16357520, 20446900, 40893800, 81787600]

約数ペア:

[(1, 81787600), (2, 40893800), (4, 20446900), (5, 16357520), (8, 10223450), (10, 8178760), (16, 5111725), (20, 4089380), (25, 3271504), (40, 2044690), (50, 1635752), (80, 1022345), (100, 817876), (139, 588400), (200, 408938), (278, 294200), (400, 204469), (556, 147100), (695, 117680), (1112, 73550), (1390, 58840), (1471, 55600), (2224, 36775), (2780, 29420), (2942, 27800), (3475, 23536), (5560, 14710), (5884, 13900), (6950, 11768), (7355, 11120)]