20288684

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{389}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 20988916

約数列:

[1, 2, 4, 13, 17, 26, 34, 52, 59, 68, 118, 221, 236, 389, 442, 767, 778, 884, 1003, 1534, 1556, 2006, 3068, 4012, 5057, 6613, 10114, 13039, 13226, 20228, 22951, 26078, 26452, 45902, 52156, 85969, 91804, 171938, 298363, 343876, 390167, 596726, 780334, 1193452, 1560668, 5072171, 10144342, 20288684]

約数ペア:

[(1, 20288684), (2, 10144342), (4, 5072171), (13, 1560668), (17, 1193452), (26, 780334), (34, 596726), (52, 390167), (59, 343876), (68, 298363), (118, 171938), (221, 91804), (236, 85969), (389, 52156), (442, 45902), (767, 26452), (778, 26078), (884, 22951), (1003, 20228), (1534, 13226), (1556, 13039), (2006, 10114), (3068, 6613), (4012, 5057)]