20054060

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{563}}^1$

素因数の和:722

約数の個数: 48

約数和(自身を含む): 45765216

約数和(自身を除く): 25711156

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 563, 685, 1126, 1370, 1781, 2252, 2740, 2815, 3562, 5630, 7124, 7319, 8905, 11260, 14638, 17810, 29276, 35620, 36595, 73190, 77131, 146380, 154262, 308524, 385655, 771310, 1002703, 1542620, 2005406, 4010812, 5013515, 10027030, 20054060]

約数ペア:

[(1, 20054060), (2, 10027030), (4, 5013515), (5, 4010812), (10, 2005406), (13, 1542620), (20, 1002703), (26, 771310), (52, 385655), (65, 308524), (130, 154262), (137, 146380), (260, 77131), (274, 73190), (548, 36595), (563, 35620), (685, 29276), (1126, 17810), (1370, 14638), (1781, 11260), (2252, 8905), (2740, 7319), (2815, 7124), (3562, 5630)]