81062480

素因数分解:

$2^4\times 5^1\times {\mathrm{431}}^1\times {\mathrm{2351}}^1$

素因数の和:2795

約数の個数: 40

約数和(自身を含む): 188987904

約数和(自身を除く): 107925424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 431, 862, 1724, 2155, 2351, 3448, 4310, 4702, 6896, 8620, 9404, 11755, 17240, 18808, 23510, 34480, 37616, 47020, 94040, 188080, 1013281, 2026562, 4053124, 5066405, 8106248, 10132810, 16212496, 20265620, 40531240, 81062480]

約数ペア:

[(1, 81062480), (2, 40531240), (4, 20265620), (5, 16212496), (8, 10132810), (10, 8106248), (16, 5066405), (20, 4053124), (40, 2026562), (80, 1013281), (431, 188080), (862, 94040), (1724, 47020), (2155, 37616), (2351, 34480), (3448, 23510), (4310, 18808), (4702, 17240), (6896, 11755), (8620, 9404)]