81632920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1531}}^1$

素因数の和:1616

約数の個数: 64

約数和(自身を含む): 194135040

約数和(自身を除く): 112502120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 620, 860, 1240, 1333, 1531, 1720, 2666, 3062, 5332, 6124, 6665, 7655, 10664, 12248, 13330, 15310, 26660, 30620, 47461, 53320, 61240, 65833, 94922, 131666, 189844, 237305, 263332, 329165, 379688, 474610, 526664, 658330, 949220, 1316660, 1898440, 2040823, 2633320, 4081646, 8163292, 10204115, 16326584, 20408230, 40816460, 81632920]

約数ペア:

[(1, 81632920), (2, 40816460), (4, 20408230), (5, 16326584), (8, 10204115), (10, 8163292), (20, 4081646), (31, 2633320), (40, 2040823), (43, 1898440), (62, 1316660), (86, 949220), (124, 658330), (155, 526664), (172, 474610), (215, 379688), (248, 329165), (310, 263332), (344, 237305), (430, 189844), (620, 131666), (860, 94922), (1240, 65833), (1333, 61240), (1531, 53320), (1720, 47461), (2666, 30620), (3062, 26660), (5332, 15310), (6124, 13330), (6665, 12248), (7655, 10664)]