1289360

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:311

約数の個数: 40

約数和(自身を含む): 3053376

約数和(自身を除く): 1764016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 227, 284, 355, 454, 568, 710, 908, 1135, 1136, 1420, 1816, 2270, 2840, 3632, 4540, 5680, 9080, 16117, 18160, 32234, 64468, 80585, 128936, 161170, 257872, 322340, 644680, 1289360]

約数ペア:

[(1, 1289360), (2, 644680), (4, 322340), (5, 257872), (8, 161170), (10, 128936), (16, 80585), (20, 64468), (40, 32234), (71, 18160), (80, 16117), (142, 9080), (227, 5680), (284, 4540), (355, 3632), (454, 2840), (568, 2270), (710, 1816), (908, 1420), (1135, 1136)]