30989720

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{20939}}^1$

素因数の和:20987

約数の個数: 32

約数和(自身を含む): 71614800

約数和(自身を除く): 40625080

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 20939, 41878, 83756, 104695, 167512, 209390, 418780, 774743, 837560, 1549486, 3098972, 3873715, 6197944, 7747430, 15494860, 30989720]

約数ペア:

[(1, 30989720), (2, 15494860), (4, 7747430), (5, 6197944), (8, 3873715), (10, 3098972), (20, 1549486), (37, 837560), (40, 774743), (74, 418780), (148, 209390), (185, 167512), (296, 104695), (370, 83756), (740, 41878), (1480, 20939)]