78433880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{280121}}^1$

素因数の和:280139

約数の個数: 32

約数和(自身を含む): 201687840

約数和(自身を除く): 123253960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 280121, 560242, 1120484, 1400605, 1960847, 2240968, 2801210, 3921694, 5602420, 7843388, 9804235, 11204840, 15686776, 19608470, 39216940, 78433880]

約数ペア:

[(1, 78433880), (2, 39216940), (4, 19608470), (5, 15686776), (7, 11204840), (8, 9804235), (10, 7843388), (14, 5602420), (20, 3921694), (28, 2801210), (35, 2240968), (40, 1960847), (56, 1400605), (70, 1120484), (140, 560242), (280, 280121)]