18381909

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9619}}^1$

素因数の和:9649

約数の個数: 24

約数和(自身を含む): 30707040

約数和(自身を除く): 12325131

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9619, 28857, 67333, 125047, 201999, 375141, 471331, 875329, 1413993, 2625987, 6127303, 18381909]

約数ペア:

[(1, 18381909), (3, 6127303), (7, 2625987), (13, 1413993), (21, 875329), (39, 471331), (49, 375141), (91, 201999), (147, 125047), (273, 67333), (637, 28857), (1911, 9619)]