99909880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{356821}}^1$

素因数の和:356839

約数の個数: 32

約数和(自身を含む): 256911840

約数和(自身を除く): 157001960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 356821, 713642, 1427284, 1784105, 2497747, 2854568, 3568210, 4995494, 7136420, 9990988, 12488735, 14272840, 19981976, 24977470, 49954940, 99909880]

約数ペア:

[(1, 99909880), (2, 49954940), (4, 24977470), (5, 19981976), (7, 14272840), (8, 12488735), (10, 9990988), (14, 7136420), (20, 4995494), (28, 3568210), (35, 2854568), (40, 2497747), (56, 1784105), (70, 1427284), (140, 713642), (280, 356821)]