280643678

素因数分解:

$2^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{20903}}^1$

素因数の和:21056

約数の個数: 24

約数和(自身を含む): 493292592

約数和(自身を除く): 212648914

約数列:

[1, 2, 7, 14, 49, 98, 137, 274, 959, 1918, 6713, 13426, 20903, 41806, 146321, 292642, 1024247, 2048494, 2863711, 5727422, 20045977, 40091954, 140321839, 280643678]

約数ペア:

[(1, 280643678), (2, 140321839), (7, 40091954), (14, 20045977), (49, 5727422), (98, 2863711), (137, 2048494), (274, 1024247), (959, 292642), (1918, 146321), (6713, 41806), (13426, 20903)]