257798728

素因数分解:

$2^3\times {\mathrm{11}}^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:152

約数の個数: 80

約数和(自身を含む): 556588800

約数和(自身を除く): 298790072

約数列:

[1, 2, 4, 8, 11, 22, 31, 44, 62, 71, 88, 121, 124, 142, 242, 248, 284, 341, 484, 568, 682, 781, 968, 1331, 1364, 1562, 2201, 2662, 2728, 3124, 3751, 4402, 5324, 6248, 7502, 8591, 8804, 10648, 14641, 15004, 17182, 17608, 24211, 29282, 30008, 34364, 41261, 48422, 58564, 68728, 82522, 94501, 96844, 117128, 165044, 189002, 193688, 266321, 330088, 378004, 453871, 532642, 756008, 907742, 1039511, 1065284, 1815484, 2079022, 2130568, 2929531, 3630968, 4158044, 5859062, 8316088, 11718124, 23436248, 32224841, 64449682, 128899364, 257798728]

約数ペア:

[(1, 257798728), (2, 128899364), (4, 64449682), (8, 32224841), (11, 23436248), (22, 11718124), (31, 8316088), (44, 5859062), (62, 4158044), (71, 3630968), (88, 2929531), (121, 2130568), (124, 2079022), (142, 1815484), (242, 1065284), (248, 1039511), (284, 907742), (341, 756008), (484, 532642), (568, 453871), (682, 378004), (781, 330088), (968, 266321), (1331, 193688), (1364, 189002), (1562, 165044), (2201, 117128), (2662, 96844), (2728, 94501), (3124, 82522), (3751, 68728), (4402, 58564), (5324, 48422), (6248, 41261), (7502, 34364), (8591, 30008), (8804, 29282), (10648, 24211), (14641, 17608), (15004, 17182)]