278821960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{19309}}^1$

素因数の和:19358

約数の個数: 48

約数和(自身を含む): 662139900

約数和(自身を除く): 383317940

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1444, 1805, 2888, 3610, 7220, 14440, 19309, 38618, 77236, 96545, 154472, 193090, 366871, 386180, 733742, 772360, 1467484, 1834355, 2934968, 3668710, 6970549, 7337420, 13941098, 14674840, 27882196, 34852745, 55764392, 69705490, 139410980, 278821960]

約数ペア:

[(1, 278821960), (2, 139410980), (4, 69705490), (5, 55764392), (8, 34852745), (10, 27882196), (19, 14674840), (20, 13941098), (38, 7337420), (40, 6970549), (76, 3668710), (95, 2934968), (152, 1834355), (190, 1467484), (361, 772360), (380, 733742), (722, 386180), (760, 366871), (1444, 193090), (1805, 154472), (2888, 96545), (3610, 77236), (7220, 38618), (14440, 19309)]