256837250

素因数分解:

$2^1\times 5^3\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{389}}^1$

素因数の和:564

約数の個数: 64

約数和(自身を含む): 511056000

約数和(自身を除く): 254218750

約数列:

[1, 2, 5, 10, 19, 25, 38, 50, 95, 125, 139, 190, 250, 278, 389, 475, 695, 778, 950, 1390, 1945, 2375, 2641, 3475, 3890, 4750, 5282, 6950, 7391, 9725, 13205, 14782, 17375, 19450, 26410, 34750, 36955, 48625, 54071, 66025, 73910, 97250, 108142, 132050, 184775, 270355, 330125, 369550, 540710, 660250, 923875, 1027349, 1351775, 1847750, 2054698, 2703550, 5136745, 6758875, 10273490, 13517750, 25683725, 51367450, 128418625, 256837250]

約数ペア:

[(1, 256837250), (2, 128418625), (5, 51367450), (10, 25683725), (19, 13517750), (25, 10273490), (38, 6758875), (50, 5136745), (95, 2703550), (125, 2054698), (139, 1847750), (190, 1351775), (250, 1027349), (278, 923875), (389, 660250), (475, 540710), (695, 369550), (778, 330125), (950, 270355), (1390, 184775), (1945, 132050), (2375, 108142), (2641, 97250), (3475, 73910), (3890, 66025), (4750, 54071), (5282, 48625), (6950, 36955), (7391, 34750), (9725, 26410), (13205, 19450), (14782, 17375)]