81905390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61583}}^1$

素因数の和:61616

約数の個数: 32

約数和(自身を含む): 177361920

約数和(自身を除く): 95456530

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 61583, 123166, 307915, 431081, 615830, 862162, 1170077, 2155405, 2340154, 4310810, 5850385, 8190539, 11700770, 16381078, 40952695, 81905390]

約数ペア:

[(1, 81905390), (2, 40952695), (5, 16381078), (7, 11700770), (10, 8190539), (14, 5850385), (19, 4310810), (35, 2340154), (38, 2155405), (70, 1170077), (95, 862162), (133, 615830), (190, 431081), (266, 307915), (665, 123166), (1330, 61583)]