220144520

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{859}}^1$

素因数の和:1062

約数の個数: 64

約数和(自身を含む): 510840000

約数和(自身を除く): 290695480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 149, 172, 215, 298, 344, 430, 596, 745, 859, 860, 1192, 1490, 1718, 1720, 2980, 3436, 4295, 5960, 6407, 6872, 8590, 12814, 17180, 25628, 32035, 34360, 36937, 51256, 64070, 73874, 127991, 128140, 147748, 184685, 255982, 256280, 295496, 369370, 511964, 639955, 738740, 1023928, 1279910, 1477480, 2559820, 5119640, 5503613, 11007226, 22014452, 27518065, 44028904, 55036130, 110072260, 220144520]

約数ペア:

[(1, 220144520), (2, 110072260), (4, 55036130), (5, 44028904), (8, 27518065), (10, 22014452), (20, 11007226), (40, 5503613), (43, 5119640), (86, 2559820), (149, 1477480), (172, 1279910), (215, 1023928), (298, 738740), (344, 639955), (430, 511964), (596, 369370), (745, 295496), (859, 256280), (860, 255982), (1192, 184685), (1490, 147748), (1718, 128140), (1720, 127991), (2980, 73874), (3436, 64070), (4295, 51256), (5960, 36937), (6407, 34360), (6872, 32035), (8590, 25628), (12814, 17180)]