8991440

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1583}}^1$

素因数の和:1667

約数の個数: 40

約数和(自身を含む): 21212928

約数和(自身を除く): 12221488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 1583, 2840, 3166, 5680, 6332, 7915, 12664, 15830, 25328, 31660, 63320, 112393, 126640, 224786, 449572, 561965, 899144, 1123930, 1798288, 2247860, 4495720, 8991440]

約数ペア:

[(1, 8991440), (2, 4495720), (4, 2247860), (5, 1798288), (8, 1123930), (10, 899144), (16, 561965), (20, 449572), (40, 224786), (71, 126640), (80, 112393), (142, 63320), (284, 31660), (355, 25328), (568, 15830), (710, 12664), (1136, 7915), (1420, 6332), (1583, 5680), (2840, 3166)]