81407690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89459}}^1$

素因数の和:89486

約数の個数: 32

約数和(自身を含む): 180351360

約数和(自身を除く): 98943670

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 89459, 178918, 447295, 626213, 894590, 1162967, 1252426, 2325934, 3131065, 5814835, 6262130, 8140769, 11629670, 16281538, 40703845, 81407690]

約数ペア:

[(1, 81407690), (2, 40703845), (5, 16281538), (7, 11629670), (10, 8140769), (13, 6262130), (14, 5814835), (26, 3131065), (35, 2325934), (65, 1252426), (70, 1162967), (91, 894590), (130, 626213), (182, 447295), (455, 178918), (910, 89459)]