81913275

素因数分解:

$3^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{2129}}^1$

素因数の和:2170

約数の個数: 60

約数和(自身を含む): 159792600

約数和(自身を除く): 77879325

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 45, 57, 75, 81, 95, 135, 171, 225, 285, 405, 475, 513, 675, 855, 1425, 1539, 2025, 2129, 2565, 4275, 6387, 7695, 10645, 12825, 19161, 31935, 38475, 40451, 53225, 57483, 95805, 121353, 159675, 172449, 202255, 287415, 364059, 479025, 606765, 862245, 1011275, 1092177, 1437075, 1820295, 3033825, 3276531, 4311225, 5460885, 9101475, 16382655, 27304425, 81913275]

約数ペア:

[(1, 81913275), (3, 27304425), (5, 16382655), (9, 9101475), (15, 5460885), (19, 4311225), (25, 3276531), (27, 3033825), (45, 1820295), (57, 1437075), (75, 1092177), (81, 1011275), (95, 862245), (135, 606765), (171, 479025), (225, 364059), (285, 287415), (405, 202255), (475, 172449), (513, 159675), (675, 121353), (855, 95805), (1425, 57483), (1539, 53225), (2025, 40451), (2129, 38475), (2565, 31935), (4275, 19161), (6387, 12825), (7695, 10645)]