81242560

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{36269}}^1$

素因数の和:36293

約数の個数: 56

約数和(自身を含む): 221101920

約数和(自身を除く): 139859360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 36269, 72538, 145076, 181345, 253883, 290152, 362690, 507766, 580304, 725380, 1015532, 1160608, 1269415, 1450760, 2031064, 2321216, 2538830, 2901520, 4062128, 5077660, 5803040, 8124256, 10155320, 11606080, 16248512, 20310640, 40621280, 81242560]

約数ペア:

[(1, 81242560), (2, 40621280), (4, 20310640), (5, 16248512), (7, 11606080), (8, 10155320), (10, 8124256), (14, 5803040), (16, 5077660), (20, 4062128), (28, 2901520), (32, 2538830), (35, 2321216), (40, 2031064), (56, 1450760), (64, 1269415), (70, 1160608), (80, 1015532), (112, 725380), (140, 580304), (160, 507766), (224, 362690), (280, 290152), (320, 253883), (448, 181345), (560, 145076), (1120, 72538), (2240, 36269)]