81115900

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 184831920

約数和(自身を除く): 103716020

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 83, 100, 116, 145, 166, 290, 332, 337, 415, 580, 674, 725, 830, 1348, 1450, 1660, 1685, 2075, 2407, 2900, 3370, 4150, 4814, 6740, 8300, 8425, 9628, 9773, 12035, 16850, 19546, 24070, 27971, 33700, 39092, 48140, 48865, 55942, 60175, 97730, 111884, 120350, 139855, 195460, 240700, 244325, 279710, 488650, 559420, 699275, 811159, 977300, 1398550, 1622318, 2797100, 3244636, 4055795, 8111590, 16223180, 20278975, 40557950, 81115900]

約数ペア:

[(1, 81115900), (2, 40557950), (4, 20278975), (5, 16223180), (10, 8111590), (20, 4055795), (25, 3244636), (29, 2797100), (50, 1622318), (58, 1398550), (83, 977300), (100, 811159), (116, 699275), (145, 559420), (166, 488650), (290, 279710), (332, 244325), (337, 240700), (415, 195460), (580, 139855), (674, 120350), (725, 111884), (830, 97730), (1348, 60175), (1450, 55942), (1660, 48865), (1685, 48140), (2075, 39092), (2407, 33700), (2900, 27971), (3370, 24070), (4150, 19546), (4814, 16850), (6740, 12035), (8300, 9773), (8425, 9628)]