1261891930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{70853}}^1$

素因数の和:71010

約数の個数: 32

約数和(自身を含む): 2464018704

約数和(自身を除く): 1202126774

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 137, 274, 685, 1370, 1781, 3562, 8905, 17810, 70853, 141706, 354265, 708530, 921089, 1842178, 4605445, 9210890, 9706861, 19413722, 48534305, 97068610, 126189193, 252378386, 630945965, 1261891930]

約数ペア:

[(1, 1261891930), (2, 630945965), (5, 252378386), (10, 126189193), (13, 97068610), (26, 48534305), (65, 19413722), (130, 9706861), (137, 9210890), (274, 4605445), (685, 1842178), (1370, 921089), (1781, 708530), (3562, 354265), (8905, 141706), (17810, 70853)]