1980869905

素因数分解:

$5^1\times 7^1\times {\mathrm{257}}^1\times {\mathrm{349}}^1\times {\mathrm{631}}^1$

素因数の和:1249

約数の個数: 32

約数和(自身を含む): 2739340800

約数和(自身を除く): 758470895

約数列:

[1, 5, 7, 35, 257, 349, 631, 1285, 1745, 1799, 2443, 3155, 4417, 8995, 12215, 22085, 89693, 162167, 220219, 448465, 627851, 810835, 1101095, 1135169, 1541533, 3139255, 5675845, 7707665, 56596283, 282981415, 396173981, 1980869905]

約数ペア:

[(1, 1980869905), (5, 396173981), (7, 282981415), (35, 56596283), (257, 7707665), (349, 5675845), (631, 3139255), (1285, 1541533), (1745, 1135169), (1799, 1101095), (2443, 810835), (3155, 627851), (4417, 448465), (8995, 220219), (12215, 162167), (22085, 89693)]