20698540

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{337}}^1$

素因数の和:466

約数の個数: 48

約数和(自身を含む): 45313632

約数和(自身を除く): 24615092

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 83, 148, 166, 185, 332, 337, 370, 415, 674, 740, 830, 1348, 1660, 1685, 3071, 3370, 6142, 6740, 12284, 12469, 15355, 24938, 27971, 30710, 49876, 55942, 61420, 62345, 111884, 124690, 139855, 249380, 279710, 559420, 1034927, 2069854, 4139708, 5174635, 10349270, 20698540]

約数ペア:

[(1, 20698540), (2, 10349270), (4, 5174635), (5, 4139708), (10, 2069854), (20, 1034927), (37, 559420), (74, 279710), (83, 249380), (148, 139855), (166, 124690), (185, 111884), (332, 62345), (337, 61420), (370, 55942), (415, 49876), (674, 30710), (740, 27971), (830, 24938), (1348, 15355), (1660, 12469), (1685, 12284), (3071, 6740), (3370, 6142)]