81121050

素因数分解:

$2^1\times 3^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{2539}}^1$

素因数の和:2628

約数の個数: 72

約数和(自身を含む): 221101920

約数和(自身を除く): 139980870

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 25, 30, 45, 50, 71, 75, 90, 142, 150, 213, 225, 355, 426, 450, 639, 710, 1065, 1278, 1775, 2130, 2539, 3195, 3550, 5078, 5325, 6390, 7617, 10650, 12695, 15234, 15975, 22851, 25390, 31950, 38085, 45702, 63475, 76170, 114255, 126950, 180269, 190425, 228510, 360538, 380850, 540807, 571275, 901345, 1081614, 1142550, 1622421, 1802690, 2704035, 3244842, 4506725, 5408070, 8112105, 9013450, 13520175, 16224210, 27040350, 40560525, 81121050]

約数ペア:

[(1, 81121050), (2, 40560525), (3, 27040350), (5, 16224210), (6, 13520175), (9, 9013450), (10, 8112105), (15, 5408070), (18, 4506725), (25, 3244842), (30, 2704035), (45, 1802690), (50, 1622421), (71, 1142550), (75, 1081614), (90, 901345), (142, 571275), (150, 540807), (213, 380850), (225, 360538), (355, 228510), (426, 190425), (450, 180269), (639, 126950), (710, 114255), (1065, 76170), (1278, 63475), (1775, 45702), (2130, 38085), (2539, 31950), (3195, 25390), (3550, 22851), (5078, 15975), (5325, 15234), (6390, 12695), (7617, 10650)]