81646020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{15641}}^1$

素因数の和:15685

約数の個数: 72

約数和(自身を含む): 256215960

約数和(自身を除く): 174569940

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, 15641, 31282, 46923, 62564, 78205, 93846, 140769, 156410, 187692, 234615, 281538, 312820, 453589, 469230, 563076, 703845, 907178, 938460, 1360767, 1407690, 1814356, 2267945, 2721534, 2815380, 4082301, 4535890, 5443068, 6803835, 8164602, 9071780, 13607670, 16329204, 20411505, 27215340, 40823010, 81646020]

約数ペア:

[(1, 81646020), (2, 40823010), (3, 27215340), (4, 20411505), (5, 16329204), (6, 13607670), (9, 9071780), (10, 8164602), (12, 6803835), (15, 5443068), (18, 4535890), (20, 4082301), (29, 2815380), (30, 2721534), (36, 2267945), (45, 1814356), (58, 1407690), (60, 1360767), (87, 938460), (90, 907178), (116, 703845), (145, 563076), (174, 469230), (180, 453589), (261, 312820), (290, 281538), (348, 234615), (435, 187692), (522, 156410), (580, 140769), (870, 93846), (1044, 78205), (1305, 62564), (1740, 46923), (2610, 31282), (5220, 15641)]