21490004

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{109}}^1\times {\mathrm{2143}}^1$

素因数の和:2279

約数の個数: 24

約数和(自身を含む): 39621120

約数和(自身を除く): 18131116

約数列:

[1, 2, 4, 23, 46, 92, 109, 218, 436, 2143, 2507, 4286, 5014, 8572, 10028, 49289, 98578, 197156, 233587, 467174, 934348, 5372501, 10745002, 21490004]

約数ペア:

[(1, 21490004), (2, 10745002), (4, 5372501), (23, 934348), (46, 467174), (92, 233587), (109, 197156), (218, 98578), (436, 49289), (2143, 10028), (2507, 8572), (4286, 5014)]