20828788

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{5171}}^1$

素因数の和:5247

約数の個数: 24

約数和(自身を含む): 39100320

約数和(自身を除く): 18271532

約数列:

[1, 2, 4, 19, 38, 53, 76, 106, 212, 1007, 2014, 4028, 5171, 10342, 20684, 98249, 196498, 274063, 392996, 548126, 1096252, 5207197, 10414394, 20828788]

約数ペア:

[(1, 20828788), (2, 10414394), (4, 5207197), (19, 1096252), (38, 548126), (53, 392996), (76, 274063), (106, 196498), (212, 98249), (1007, 20684), (2014, 10342), (4028, 5171)]