81468540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15607}}^1$

素因数の和:15651

約数の個数: 72

約数和(自身を含む): 255659040

約数和(自身を除く): 174190500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 29, 30, 36, 45, 58, 60, 87, 90, 116, 145, 174, 180, 261, 290, 348, 435, 522, 580, 870, 1044, 1305, 1740, 2610, 5220, 15607, 31214, 46821, 62428, 78035, 93642, 140463, 156070, 187284, 234105, 280926, 312140, 452603, 468210, 561852, 702315, 905206, 936420, 1357809, 1404630, 1810412, 2263015, 2715618, 2809260, 4073427, 4526030, 5431236, 6789045, 8146854, 9052060, 13578090, 16293708, 20367135, 27156180, 40734270, 81468540]

約数ペア:

[(1, 81468540), (2, 40734270), (3, 27156180), (4, 20367135), (5, 16293708), (6, 13578090), (9, 9052060), (10, 8146854), (12, 6789045), (15, 5431236), (18, 4526030), (20, 4073427), (29, 2809260), (30, 2715618), (36, 2263015), (45, 1810412), (58, 1404630), (60, 1357809), (87, 936420), (90, 905206), (116, 702315), (145, 561852), (174, 468210), (180, 452603), (261, 312140), (290, 280926), (348, 234105), (435, 187284), (522, 156070), (580, 140463), (870, 93642), (1044, 78035), (1305, 62428), (1740, 46821), (2610, 31214), (5220, 15607)]