81115240

素因数分解:

$2^3\times 5^1\times {\mathrm{167}}^1\times {\mathrm{12143}}^1$

素因数の和:12321

約数の個数: 32

約数和(自身を含む): 183617280

約数和(自身を除く): 102502040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 167, 334, 668, 835, 1336, 1670, 3340, 6680, 12143, 24286, 48572, 60715, 97144, 121430, 242860, 485720, 2027881, 4055762, 8111524, 10139405, 16223048, 20278810, 40557620, 81115240]

約数ペア:

[(1, 81115240), (2, 40557620), (4, 20278810), (5, 16223048), (8, 10139405), (10, 8111524), (20, 4055762), (40, 2027881), (167, 485720), (334, 242860), (668, 121430), (835, 97144), (1336, 60715), (1670, 48572), (3340, 24286), (6680, 12143)]