19413955

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{103}}^1\times {\mathrm{149}}^1$

素因数の和:291

約数の個数: 32

約数和(自身を含む): 26956800

約数和(自身を除く): 7542845

約数列:

[1, 5, 11, 23, 55, 103, 115, 149, 253, 515, 745, 1133, 1265, 1639, 2369, 3427, 5665, 8195, 11845, 15347, 17135, 26059, 37697, 76735, 130295, 168817, 188485, 352981, 844085, 1764905, 3882791, 19413955]

約数ペア:

[(1, 19413955), (5, 3882791), (11, 1764905), (23, 844085), (55, 352981), (103, 188485), (115, 168817), (149, 130295), (253, 76735), (515, 37697), (745, 26059), (1133, 17135), (1265, 15347), (1639, 11845), (2369, 8195), (3427, 5665)]