20210875785

素因数分解:

$3^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{15629}}^1$

素因数の和:15780

約数の個数: 80

約数和(自身を含む): 37764080640

約数和(自身を除く): 17553204855

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 81, 93, 103, 135, 155, 279, 309, 405, 465, 515, 837, 927, 1395, 1545, 2511, 2781, 3193, 4185, 4635, 8343, 9579, 12555, 13905, 15629, 15965, 28737, 41715, 46887, 47895, 78145, 86211, 140661, 143685, 234435, 258633, 421983, 431055, 484499, 703305, 1265949, 1293165, 1453497, 1609787, 2109915, 2422495, 4360491, 4829361, 6329745, 7267485, 8048935, 13081473, 14488083, 21802455, 24146805, 39244419, 43464249, 49903397, 65407365, 72440415, 130392747, 149710191, 196222095, 217321245, 249516985, 449130573, 651963735, 748550955, 1347391719, 2245652865, 4042175157, 6736958595, 20210875785]

約数ペア:

[(1, 20210875785), (3, 6736958595), (5, 4042175157), (9, 2245652865), (15, 1347391719), (27, 748550955), (31, 651963735), (45, 449130573), (81, 249516985), (93, 217321245), (103, 196222095), (135, 149710191), (155, 130392747), (279, 72440415), (309, 65407365), (405, 49903397), (465, 43464249), (515, 39244419), (837, 24146805), (927, 21802455), (1395, 14488083), (1545, 13081473), (2511, 8048935), (2781, 7267485), (3193, 6329745), (4185, 4829361), (4635, 4360491), (8343, 2422495), (9579, 2109915), (12555, 1609787), (13905, 1453497), (15629, 1293165), (15965, 1265949), (28737, 703305), (41715, 484499), (46887, 431055), (47895, 421983), (78145, 258633), (86211, 234435), (140661, 143685)]