21272590

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1087}}^1$

素因数の和:1216

約数の個数: 32

約数和(自身を含む): 40734720

約数和(自身を除く): 19462130

約数列:

[1, 2, 5, 10, 19, 38, 95, 103, 190, 206, 515, 1030, 1087, 1957, 2174, 3914, 5435, 9785, 10870, 19570, 20653, 41306, 103265, 111961, 206530, 223922, 559805, 1119610, 2127259, 4254518, 10636295, 21272590]

約数ペア:

[(1, 21272590), (2, 10636295), (5, 4254518), (10, 2127259), (19, 1119610), (38, 559805), (95, 223922), (103, 206530), (190, 111961), (206, 103265), (515, 41306), (1030, 20653), (1087, 19570), (1957, 10870), (2174, 9785), (3914, 5435)]