20992430

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 38750400

約数和(自身を除く): 17757970

約数列:

[1, 2, 5, 10, 89, 103, 178, 206, 229, 445, 458, 515, 890, 1030, 1145, 2290, 9167, 18334, 20381, 23587, 40762, 45835, 47174, 91670, 101905, 117935, 203810, 235870, 2099243, 4198486, 10496215, 20992430]

約数ペア:

[(1, 20992430), (2, 10496215), (5, 4198486), (10, 2099243), (89, 235870), (103, 203810), (178, 117935), (206, 101905), (229, 91670), (445, 47174), (458, 45835), (515, 40762), (890, 23587), (1030, 20381), (1145, 18334), (2290, 9167)]