405720215

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{2477}}^1$

素因数の和:2587

約数の個数: 32

約数和(自身を含む): 539529984

約数和(自身を除く): 133809769

約数列:

[1, 5, 17, 41, 47, 85, 205, 235, 697, 799, 1927, 2477, 3485, 3995, 9635, 12385, 32759, 42109, 101557, 116419, 163795, 210545, 507785, 582095, 1726469, 1979123, 4773179, 8632345, 9895615, 23865895, 81144043, 405720215]

約数ペア:

[(1, 405720215), (5, 81144043), (17, 23865895), (41, 9895615), (47, 8632345), (85, 4773179), (205, 1979123), (235, 1726469), (697, 582095), (799, 507785), (1927, 210545), (2477, 163795), (3485, 116419), (3995, 101557), (9635, 42109), (12385, 32759)]