71803720

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{131}}^1\times {\mathrm{193}}^1$

素因数の和:406

約数の個数: 64

約数和(自身を含む): 165939840

約数和(自身を除く): 94136120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 131, 142, 193, 262, 284, 355, 386, 524, 568, 655, 710, 772, 965, 1048, 1310, 1420, 1544, 1930, 2620, 2840, 3860, 5240, 7720, 9301, 13703, 18602, 25283, 27406, 37204, 46505, 50566, 54812, 68515, 74408, 93010, 101132, 109624, 126415, 137030, 186020, 202264, 252830, 274060, 372040, 505660, 548120, 1011320, 1795093, 3590186, 7180372, 8975465, 14360744, 17950930, 35901860, 71803720]

約数ペア:

[(1, 71803720), (2, 35901860), (4, 17950930), (5, 14360744), (8, 8975465), (10, 7180372), (20, 3590186), (40, 1795093), (71, 1011320), (131, 548120), (142, 505660), (193, 372040), (262, 274060), (284, 252830), (355, 202264), (386, 186020), (524, 137030), (568, 126415), (655, 109624), (710, 101132), (772, 93010), (965, 74408), (1048, 68515), (1310, 54812), (1420, 50566), (1544, 46505), (1930, 37204), (2620, 27406), (2840, 25283), (3860, 18602), (5240, 13703), (7720, 9301)]