21919636

素因数分解:

$2^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{641}}^1$

素因数の和:831

約数の個数: 24

約数和(自身を含む): 39259584

約数和(自身を除く): 17339948

約数列:

[1, 2, 4, 83, 103, 166, 206, 332, 412, 641, 1282, 2564, 8549, 17098, 34196, 53203, 66023, 106406, 132046, 212812, 264092, 5479909, 10959818, 21919636]

約数ペア:

[(1, 21919636), (2, 10959818), (4, 5479909), (83, 264092), (103, 212812), (166, 132046), (206, 106406), (332, 66023), (412, 53203), (641, 34196), (1282, 17098), (2564, 8549)]