21281970

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{479}}^1\times {\mathrm{1481}}^1$

素因数の和:1970

約数の個数: 32

約数和(自身を含む): 51217920

約数和(自身を除く): 29935950

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 479, 958, 1437, 1481, 2395, 2874, 2962, 4443, 4790, 7185, 7405, 8886, 14370, 14810, 22215, 44430, 709399, 1418798, 2128197, 3546995, 4256394, 7093990, 10640985, 21281970]

約数ペア:

[(1, 21281970), (2, 10640985), (3, 7093990), (5, 4256394), (6, 3546995), (10, 2128197), (15, 1418798), (30, 709399), (479, 44430), (958, 22215), (1437, 14810), (1481, 14370), (2395, 8886), (2874, 7405), (2962, 7185), (4443, 4790)]