18181280

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8741}}^1$

素因数の和:8769

約数の個数: 48

約数和(自身を含む): 46262664

約数和(自身を除く): 28081384

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 8741, 17482, 34964, 43705, 69928, 87410, 113633, 139856, 174820, 227266, 279712, 349640, 454532, 568165, 699280, 909064, 1136330, 1398560, 1818128, 2272660, 3636256, 4545320, 9090640, 18181280]

約数ペア:

[(1, 18181280), (2, 9090640), (4, 4545320), (5, 3636256), (8, 2272660), (10, 1818128), (13, 1398560), (16, 1136330), (20, 909064), (26, 699280), (32, 568165), (40, 454532), (52, 349640), (65, 279712), (80, 227266), (104, 174820), (130, 139856), (160, 113633), (208, 87410), (260, 69928), (416, 43705), (520, 34964), (1040, 17482), (2080, 8741)]