21583220

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{26321}}^1$

素因数の和:26371

約数の個数: 24

約数和(自身を含む): 46432008

約数和(自身を除く): 24848788

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 410, 820, 26321, 52642, 105284, 131605, 263210, 526420, 1079161, 2158322, 4316644, 5395805, 10791610, 21583220]

約数ペア:

[(1, 21583220), (2, 10791610), (4, 5395805), (5, 4316644), (10, 2158322), (20, 1079161), (41, 526420), (82, 263210), (164, 131605), (205, 105284), (410, 52642), (820, 26321)]