261806320

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{4201}}^1$

素因数の和:4274

約数の個数: 80

約数和(自身を含む): 656520480

約数和(自身を除く): 394714160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 41, 76, 80, 82, 95, 152, 164, 190, 205, 304, 328, 380, 410, 656, 760, 779, 820, 1520, 1558, 1640, 3116, 3280, 3895, 4201, 6232, 7790, 8402, 12464, 15580, 16804, 21005, 31160, 33608, 42010, 62320, 67216, 79819, 84020, 159638, 168040, 172241, 319276, 336080, 344482, 399095, 638552, 688964, 798190, 861205, 1277104, 1377928, 1596380, 1722410, 2755856, 3192760, 3272579, 3444820, 6385520, 6545158, 6889640, 13090316, 13779280, 16362895, 26180632, 32725790, 52361264, 65451580, 130903160, 261806320]

約数ペア:

[(1, 261806320), (2, 130903160), (4, 65451580), (5, 52361264), (8, 32725790), (10, 26180632), (16, 16362895), (19, 13779280), (20, 13090316), (38, 6889640), (40, 6545158), (41, 6385520), (76, 3444820), (80, 3272579), (82, 3192760), (95, 2755856), (152, 1722410), (164, 1596380), (190, 1377928), (205, 1277104), (304, 861205), (328, 798190), (380, 688964), (410, 638552), (656, 399095), (760, 344482), (779, 336080), (820, 319276), (1520, 172241), (1558, 168040), (1640, 159638), (3116, 84020), (3280, 79819), (3895, 67216), (4201, 62320), (6232, 42010), (7790, 33608), (8402, 31160), (12464, 21005), (15580, 16804)]