20402955

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{6571}}^1$

素因数の和:6608

約数の個数: 32

約数和(自身を含む): 37854720

約数和(自身を除く): 17451765

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 69, 115, 135, 207, 345, 621, 1035, 3105, 6571, 19713, 32855, 59139, 98565, 151133, 177417, 295695, 453399, 755665, 887085, 1360197, 2266995, 4080591, 6800985, 20402955]

約数ペア:

[(1, 20402955), (3, 6800985), (5, 4080591), (9, 2266995), (15, 1360197), (23, 887085), (27, 755665), (45, 453399), (69, 295695), (115, 177417), (135, 151133), (207, 98565), (345, 59139), (621, 32855), (1035, 19713), (3105, 6571)]