20623980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{193}}^1$

素因数の和:355

約数の個数: 96

約数和(自身を含む): 62967744

約数和(自身を除く): 42343764

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 137, 156, 193, 195, 260, 274, 386, 390, 411, 548, 579, 685, 772, 780, 822, 965, 1158, 1370, 1644, 1781, 1930, 2055, 2316, 2509, 2740, 2895, 3562, 3860, 4110, 5018, 5343, 5790, 7124, 7527, 8220, 8905, 10036, 10686, 11580, 12545, 15054, 17810, 21372, 25090, 26441, 26715, 30108, 35620, 37635, 50180, 52882, 53430, 75270, 79323, 105764, 106860, 132205, 150540, 158646, 264410, 317292, 343733, 396615, 528820, 687466, 793230, 1031199, 1374932, 1586460, 1718665, 2062398, 3437330, 4124796, 5155995, 6874660, 10311990, 20623980]

約数ペア:

[(1, 20623980), (2, 10311990), (3, 6874660), (4, 5155995), (5, 4124796), (6, 3437330), (10, 2062398), (12, 1718665), (13, 1586460), (15, 1374932), (20, 1031199), (26, 793230), (30, 687466), (39, 528820), (52, 396615), (60, 343733), (65, 317292), (78, 264410), (130, 158646), (137, 150540), (156, 132205), (193, 106860), (195, 105764), (260, 79323), (274, 75270), (386, 53430), (390, 52882), (411, 50180), (548, 37635), (579, 35620), (685, 30108), (772, 26715), (780, 26441), (822, 25090), (965, 21372), (1158, 17810), (1370, 15054), (1644, 12545), (1781, 11580), (1930, 10686), (2055, 10036), (2316, 8905), (2509, 8220), (2740, 7527), (2895, 7124), (3562, 5790), (3860, 5343), (4110, 5018)]