681564

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{257}}^1$

素因数の和:294

約数の個数: 48

約数和(自身を含む): 1820448

約数和(自身を除く): 1138884

約数列:

[1, 2, 3, 4, 6, 12, 13, 17, 26, 34, 39, 51, 52, 68, 78, 102, 156, 204, 221, 257, 442, 514, 663, 771, 884, 1028, 1326, 1542, 2652, 3084, 3341, 4369, 6682, 8738, 10023, 13107, 13364, 17476, 20046, 26214, 40092, 52428, 56797, 113594, 170391, 227188, 340782, 681564]

約数ペア:

[(1, 681564), (2, 340782), (3, 227188), (4, 170391), (6, 113594), (12, 56797), (13, 52428), (17, 40092), (26, 26214), (34, 20046), (39, 17476), (51, 13364), (52, 13107), (68, 10023), (78, 8738), (102, 6682), (156, 4369), (204, 3341), (221, 3084), (257, 2652), (442, 1542), (514, 1326), (663, 1028), (771, 884)]