1389200020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1931}}^1\times {\mathrm{2767}}^1$

素因数の和:4720

約数の個数: 48

約数和(自身を含む): 3144492288

約数和(自身を除く): 1755292268

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1931, 2767, 3862, 5534, 7724, 9655, 11068, 13835, 19310, 25103, 27670, 35971, 38620, 50206, 55340, 71942, 100412, 125515, 143884, 179855, 251030, 359710, 502060, 719420, 5343077, 10686154, 21372308, 26715385, 53430770, 69460001, 106861540, 138920002, 277840004, 347300005, 694600010, 1389200020]

約数ペア:

[(1, 1389200020), (2, 694600010), (4, 347300005), (5, 277840004), (10, 138920002), (13, 106861540), (20, 69460001), (26, 53430770), (52, 26715385), (65, 21372308), (130, 10686154), (260, 5343077), (1931, 719420), (2767, 502060), (3862, 359710), (5534, 251030), (7724, 179855), (9655, 143884), (11068, 125515), (13835, 100412), (19310, 71942), (25103, 55340), (27670, 50206), (35971, 38620)]