209217820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{503}}^1\times {\mathrm{2971}}^1$

素因数の和:3490

約数の個数: 48

約数和(自身を含む): 503290368

約数和(自身を除く): 294072548

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 503, 1006, 2012, 2515, 2971, 3521, 5030, 5942, 7042, 10060, 11884, 14084, 14855, 17605, 20797, 29710, 35210, 41594, 59420, 70420, 83188, 103985, 207970, 415940, 1494413, 2988826, 5977652, 7472065, 10460891, 14944130, 20921782, 29888260, 41843564, 52304455, 104608910, 209217820]

約数ペア:

[(1, 209217820), (2, 104608910), (4, 52304455), (5, 41843564), (7, 29888260), (10, 20921782), (14, 14944130), (20, 10460891), (28, 7472065), (35, 5977652), (70, 2988826), (140, 1494413), (503, 415940), (1006, 207970), (2012, 103985), (2515, 83188), (2971, 70420), (3521, 59420), (5030, 41594), (5942, 35210), (7042, 29710), (10060, 20797), (11884, 17605), (14084, 14855)]