21662145

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{199}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 39312000

約数和(自身を除く): 17649855

約数列:

[1, 3, 5, 9, 15, 41, 45, 59, 123, 177, 199, 205, 295, 369, 531, 597, 615, 885, 995, 1791, 1845, 2419, 2655, 2985, 7257, 8159, 8955, 11741, 12095, 21771, 24477, 35223, 36285, 40795, 58705, 73431, 105669, 108855, 122385, 176115, 367155, 481381, 528345, 1444143, 2406905, 4332429, 7220715, 21662145]

約数ペア:

[(1, 21662145), (3, 7220715), (5, 4332429), (9, 2406905), (15, 1444143), (41, 528345), (45, 481381), (59, 367155), (123, 176115), (177, 122385), (199, 108855), (205, 105669), (295, 73431), (369, 58705), (531, 40795), (597, 36285), (615, 35223), (885, 24477), (995, 21771), (1791, 12095), (1845, 11741), (2419, 8955), (2655, 8159), (2985, 7257)]