1281823140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1643363}}^1$

素因数の和:1643388

約数の個数: 48

約数和(自身を含む): 3865192128

約数和(自身を除く): 2583368988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 1643363, 3286726, 4930089, 6573452, 8216815, 9860178, 16433630, 19720356, 21363719, 24650445, 32867260, 42727438, 49300890, 64091157, 85454876, 98601780, 106818595, 128182314, 213637190, 256364628, 320455785, 427274380, 640911570, 1281823140]

約数ペア:

[(1, 1281823140), (2, 640911570), (3, 427274380), (4, 320455785), (5, 256364628), (6, 213637190), (10, 128182314), (12, 106818595), (13, 98601780), (15, 85454876), (20, 64091157), (26, 49300890), (30, 42727438), (39, 32867260), (52, 24650445), (60, 21363719), (65, 19720356), (78, 16433630), (130, 9860178), (156, 8216815), (195, 6573452), (260, 4930089), (390, 3286726), (780, 1643363)]