19903230

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{281}}^1\times {\mathrm{787}}^1$

素因数の和:1081

約数の個数: 48

約数和(自身を含む): 51998544

約数和(自身を除く): 32095314

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 281, 562, 787, 843, 1405, 1574, 1686, 2361, 2529, 2810, 3935, 4215, 4722, 5058, 7083, 7870, 8430, 11805, 12645, 14166, 23610, 25290, 35415, 70830, 221147, 442294, 663441, 1105735, 1326882, 1990323, 2211470, 3317205, 3980646, 6634410, 9951615, 19903230]

約数ペア:

[(1, 19903230), (2, 9951615), (3, 6634410), (5, 3980646), (6, 3317205), (9, 2211470), (10, 1990323), (15, 1326882), (18, 1105735), (30, 663441), (45, 442294), (90, 221147), (281, 70830), (562, 35415), (787, 25290), (843, 23610), (1405, 14166), (1574, 12645), (1686, 11805), (2361, 8430), (2529, 7870), (2810, 7083), (3935, 5058), (4215, 4722)]