278655260

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{7823}}^1$

素因数の和:7982

約数の個数: 48

約数和(自身を含む): 634870656

約数和(自身を除く): 356215396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 685, 1370, 1781, 2740, 3562, 7124, 7823, 8905, 15646, 17810, 31292, 35620, 39115, 78230, 101699, 156460, 203398, 406796, 508495, 1016990, 1071751, 2033980, 2143502, 4287004, 5358755, 10717510, 13932763, 21435020, 27865526, 55731052, 69663815, 139327630, 278655260]

約数ペア:

[(1, 278655260), (2, 139327630), (4, 69663815), (5, 55731052), (10, 27865526), (13, 21435020), (20, 13932763), (26, 10717510), (52, 5358755), (65, 4287004), (130, 2143502), (137, 2033980), (260, 1071751), (274, 1016990), (548, 508495), (685, 406796), (1370, 203398), (1781, 156460), (2740, 101699), (3562, 78230), (7124, 39115), (7823, 35620), (8905, 31292), (15646, 17810)]