490280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{103}}^1$

素因数の和:138

約数の個数: 64

約数和(自身を含む): 1347840

約数和(自身を除く): 857560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 56, 68, 70, 85, 103, 119, 136, 140, 170, 206, 238, 280, 340, 412, 476, 515, 595, 680, 721, 824, 952, 1030, 1190, 1442, 1751, 2060, 2380, 2884, 3502, 3605, 4120, 4760, 5768, 7004, 7210, 8755, 12257, 14008, 14420, 17510, 24514, 28840, 35020, 49028, 61285, 70040, 98056, 122570, 245140, 490280]

約数ペア:

[(1, 490280), (2, 245140), (4, 122570), (5, 98056), (7, 70040), (8, 61285), (10, 49028), (14, 35020), (17, 28840), (20, 24514), (28, 17510), (34, 14420), (35, 14008), (40, 12257), (56, 8755), (68, 7210), (70, 7004), (85, 5768), (103, 4760), (119, 4120), (136, 3605), (140, 3502), (170, 2884), (206, 2380), (238, 2060), (280, 1751), (340, 1442), (412, 1190), (476, 1030), (515, 952), (595, 824), (680, 721)]