19321640

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{509}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 47552400

約数和(自身を除く): 28230760

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 509, 520, 584, 730, 949, 1018, 1460, 1898, 2036, 2545, 2920, 3796, 4072, 4745, 5090, 6617, 7592, 9490, 10180, 13234, 18980, 20360, 26468, 33085, 37157, 37960, 52936, 66170, 74314, 132340, 148628, 185785, 264680, 297256, 371570, 483041, 743140, 966082, 1486280, 1932164, 2415205, 3864328, 4830410, 9660820, 19321640]

約数ペア:

[(1, 19321640), (2, 9660820), (4, 4830410), (5, 3864328), (8, 2415205), (10, 1932164), (13, 1486280), (20, 966082), (26, 743140), (40, 483041), (52, 371570), (65, 297256), (73, 264680), (104, 185785), (130, 148628), (146, 132340), (260, 74314), (292, 66170), (365, 52936), (509, 37960), (520, 37157), (584, 33085), (730, 26468), (949, 20360), (1018, 18980), (1460, 13234), (1898, 10180), (2036, 9490), (2545, 7592), (2920, 6617), (3796, 5090), (4072, 4745)]