256987730

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{503}}^1\times {\mathrm{2689}}^1$

素因数の和:3218

約数の個数: 32

約数和(自身を含む): 488073600

約数和(自身を除く): 231085870

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 503, 1006, 2515, 2689, 5030, 5378, 9557, 13445, 19114, 26890, 47785, 51091, 95570, 102182, 255455, 510910, 1352567, 2705134, 6762835, 13525670, 25698773, 51397546, 128493865, 256987730]

約数ペア:

[(1, 256987730), (2, 128493865), (5, 51397546), (10, 25698773), (19, 13525670), (38, 6762835), (95, 2705134), (190, 1352567), (503, 510910), (1006, 255455), (2515, 102182), (2689, 95570), (5030, 51091), (5378, 47785), (9557, 26890), (13445, 19114)]