8564440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{191}}^1$

素因数の和:280

約数の個数: 64

約数和(自身を含む): 20736000

約数和(自身を除く): 12171560

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 59, 76, 95, 118, 152, 190, 191, 236, 295, 380, 382, 472, 590, 760, 764, 955, 1121, 1180, 1528, 1910, 2242, 2360, 3629, 3820, 4484, 5605, 7258, 7640, 8968, 11210, 11269, 14516, 18145, 22420, 22538, 29032, 36290, 44840, 45076, 56345, 72580, 90152, 112690, 145160, 214111, 225380, 428222, 450760, 856444, 1070555, 1712888, 2141110, 4282220, 8564440]

約数ペア:

[(1, 8564440), (2, 4282220), (4, 2141110), (5, 1712888), (8, 1070555), (10, 856444), (19, 450760), (20, 428222), (38, 225380), (40, 214111), (59, 145160), (76, 112690), (95, 90152), (118, 72580), (152, 56345), (190, 45076), (191, 44840), (236, 36290), (295, 29032), (380, 22538), (382, 22420), (472, 18145), (590, 14516), (760, 11269), (764, 11210), (955, 8968), (1121, 7640), (1180, 7258), (1528, 5605), (1910, 4484), (2242, 3820), (2360, 3629)]