131851360

素因数分解:

$2^5\times 5^1\times {\mathrm{509}}^1\times {\mathrm{1619}}^1$

素因数の和:2143

約数の個数: 48

約数和(自身を含む): 312303600

約数和(自身を除く): 180452240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 509, 1018, 1619, 2036, 2545, 3238, 4072, 5090, 6476, 8095, 8144, 10180, 12952, 16190, 16288, 20360, 25904, 32380, 40720, 51808, 64760, 81440, 129520, 259040, 824071, 1648142, 3296284, 4120355, 6592568, 8240710, 13185136, 16481420, 26370272, 32962840, 65925680, 131851360]

約数ペア:

[(1, 131851360), (2, 65925680), (4, 32962840), (5, 26370272), (8, 16481420), (10, 13185136), (16, 8240710), (20, 6592568), (32, 4120355), (40, 3296284), (80, 1648142), (160, 824071), (509, 259040), (1018, 129520), (1619, 81440), (2036, 64760), (2545, 51808), (3238, 40720), (4072, 32380), (5090, 25904), (6476, 20360), (8095, 16288), (8144, 16190), (10180, 12952)]