20105985

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2131}}^1$

素因数の和:2193

約数の個数: 32

約数和(自身を含む): 34998912

約数和(自身を除く): 14892927

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2131, 3145, 6393, 9435, 10655, 31965, 36227, 78847, 108681, 181135, 236541, 394235, 543405, 1182705, 1340399, 4021197, 6701995, 20105985]

約数ペア:

[(1, 20105985), (3, 6701995), (5, 4021197), (15, 1340399), (17, 1182705), (37, 543405), (51, 394235), (85, 236541), (111, 181135), (185, 108681), (255, 78847), (555, 36227), (629, 31965), (1887, 10655), (2131, 9435), (3145, 6393)]