40721720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{78311}}^1$

素因数の和:78335

約数の個数: 32

約数和(自身を含む): 98673120

約数和(自身を除く): 57951400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 78311, 156622, 313244, 391555, 626488, 783110, 1018043, 1566220, 2036086, 3132440, 4072172, 5090215, 8144344, 10180430, 20360860, 40721720]

約数ペア:

[(1, 40721720), (2, 20360860), (4, 10180430), (5, 8144344), (8, 5090215), (10, 4072172), (13, 3132440), (20, 2036086), (26, 1566220), (40, 1018043), (52, 783110), (65, 626488), (104, 391555), (130, 313244), (260, 156622), (520, 78311)]