20986290

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1993}}^1$

素因数の和:2025

約数の個数: 80

約数和(自身を含む): 60801048

約数和(自身を除く): 39814758

約数列:

[1, 2, 3, 5, 6, 9, 10, 13, 15, 18, 26, 27, 30, 39, 45, 54, 65, 78, 81, 90, 117, 130, 135, 162, 195, 234, 270, 351, 390, 405, 585, 702, 810, 1053, 1170, 1755, 1993, 2106, 3510, 3986, 5265, 5979, 9965, 10530, 11958, 17937, 19930, 25909, 29895, 35874, 51818, 53811, 59790, 77727, 89685, 107622, 129545, 155454, 161433, 179370, 233181, 259090, 269055, 322866, 388635, 466362, 538110, 699543, 777270, 807165, 1165905, 1399086, 1614330, 2098629, 2331810, 3497715, 4197258, 6995430, 10493145, 20986290]

約数ペア:

[(1, 20986290), (2, 10493145), (3, 6995430), (5, 4197258), (6, 3497715), (9, 2331810), (10, 2098629), (13, 1614330), (15, 1399086), (18, 1165905), (26, 807165), (27, 777270), (30, 699543), (39, 538110), (45, 466362), (54, 388635), (65, 322866), (78, 269055), (81, 259090), (90, 233181), (117, 179370), (130, 161433), (135, 155454), (162, 129545), (195, 107622), (234, 89685), (270, 77727), (351, 59790), (390, 53811), (405, 51818), (585, 35874), (702, 29895), (810, 25909), (1053, 19930), (1170, 17937), (1755, 11958), (1993, 10530), (2106, 9965), (3510, 5979), (3986, 5265)]