68880820

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{167}}^1\times {\mathrm{503}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 149361408

約数和(自身を除く): 80480588

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 167, 205, 334, 410, 503, 668, 820, 835, 1006, 1670, 2012, 2515, 3340, 5030, 6847, 10060, 13694, 20623, 27388, 34235, 41246, 68470, 82492, 84001, 103115, 136940, 168002, 206230, 336004, 412460, 420005, 840010, 1680020, 3444041, 6888082, 13776164, 17220205, 34440410, 68880820]

約数ペア:

[(1, 68880820), (2, 34440410), (4, 17220205), (5, 13776164), (10, 6888082), (20, 3444041), (41, 1680020), (82, 840010), (164, 420005), (167, 412460), (205, 336004), (334, 206230), (410, 168002), (503, 136940), (668, 103115), (820, 84001), (835, 82492), (1006, 68470), (1670, 41246), (2012, 34235), (2515, 27388), (3340, 20623), (5030, 13694), (6847, 10060)]