216447380

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{389}}^1\times {\mathrm{647}}^1$

素因数の和:1088

約数の個数: 48

約数和(自身を含む): 467026560

約数和(自身を除く): 250579180

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 389, 430, 647, 778, 860, 1294, 1556, 1945, 2588, 3235, 3890, 6470, 7780, 12940, 16727, 27821, 33454, 55642, 66908, 83635, 111284, 139105, 167270, 251683, 278210, 334540, 503366, 556420, 1006732, 1258415, 2516830, 5033660, 10822369, 21644738, 43289476, 54111845, 108223690, 216447380]

約数ペア:

[(1, 216447380), (2, 108223690), (4, 54111845), (5, 43289476), (10, 21644738), (20, 10822369), (43, 5033660), (86, 2516830), (172, 1258415), (215, 1006732), (389, 556420), (430, 503366), (647, 334540), (778, 278210), (860, 251683), (1294, 167270), (1556, 139105), (1945, 111284), (2588, 83635), (3235, 66908), (3890, 55642), (6470, 33454), (7780, 27821), (12940, 16727)]