21000657608

素因数分解:

$2^3\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1399}}^1\times {\mathrm{8647}}^1$

素因数の和:10090

約数の個数: 64

約数和(自身を含む): 46491648000

約数和(自身を除く): 25490990392

約数列:

[1, 2, 4, 7, 8, 14, 28, 31, 56, 62, 124, 217, 248, 434, 868, 1399, 1736, 2798, 5596, 8647, 9793, 11192, 17294, 19586, 34588, 39172, 43369, 60529, 69176, 78344, 86738, 121058, 173476, 242116, 268057, 303583, 346952, 484232, 536114, 607166, 1072228, 1214332, 1876399, 2144456, 2428664, 3752798, 7505596, 12097153, 15011192, 24194306, 48388612, 84680071, 96777224, 169360142, 338720284, 375011743, 677440568, 750023486, 1500046972, 2625082201, 3000093944, 5250164402, 10500328804, 21000657608]

約数ペア:

[(1, 21000657608), (2, 10500328804), (4, 5250164402), (7, 3000093944), (8, 2625082201), (14, 1500046972), (28, 750023486), (31, 677440568), (56, 375011743), (62, 338720284), (124, 169360142), (217, 96777224), (248, 84680071), (434, 48388612), (868, 24194306), (1399, 15011192), (1736, 12097153), (2798, 7505596), (5596, 3752798), (8647, 2428664), (9793, 2144456), (11192, 1876399), (17294, 1214332), (19586, 1072228), (34588, 607166), (39172, 536114), (43369, 484232), (60529, 346952), (69176, 303583), (78344, 268057), (86738, 242116), (121058, 173476)]