20286880

素因数分解:

$2^5\times 5^1\times {\mathrm{103}}^1\times {\mathrm{1231}}^1$

素因数の和:1349

約数の個数: 48

約数和(自身を含む): 48432384

約数和(自身を除く): 28145504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 103, 160, 206, 412, 515, 824, 1030, 1231, 1648, 2060, 2462, 3296, 4120, 4924, 6155, 8240, 9848, 12310, 16480, 19696, 24620, 39392, 49240, 98480, 126793, 196960, 253586, 507172, 633965, 1014344, 1267930, 2028688, 2535860, 4057376, 5071720, 10143440, 20286880]

約数ペア:

[(1, 20286880), (2, 10143440), (4, 5071720), (5, 4057376), (8, 2535860), (10, 2028688), (16, 1267930), (20, 1014344), (32, 633965), (40, 507172), (80, 253586), (103, 196960), (160, 126793), (206, 98480), (412, 49240), (515, 39392), (824, 24620), (1030, 19696), (1231, 16480), (1648, 12310), (2060, 9848), (2462, 8240), (3296, 6155), (4120, 4924)]