1788891100

素因数分解:

$2^2\times 5^2\times {\mathrm{29}}^2\times {\mathrm{89}}^1\times {\mathrm{239}}^1$

素因数の和:400

約数の個数: 108

約数和(自身を含む): 4082551200

約数和(自身を除く): 2293660100

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 89, 100, 116, 145, 178, 239, 290, 356, 445, 478, 580, 725, 841, 890, 956, 1195, 1450, 1682, 1780, 2225, 2390, 2581, 2900, 3364, 4205, 4450, 4780, 5162, 5975, 6931, 8410, 8900, 10324, 11950, 12905, 13862, 16820, 21025, 21271, 23900, 25810, 27724, 34655, 42050, 42542, 51620, 64525, 69310, 74849, 84100, 85084, 106355, 129050, 138620, 149698, 173275, 200999, 212710, 258100, 299396, 346550, 374245, 401998, 425420, 531775, 616859, 693100, 748490, 803996, 1004995, 1063550, 1233718, 1496980, 1871225, 2009990, 2127100, 2467436, 3084295, 3742450, 4019980, 5024975, 6168590, 7484900, 10049950, 12337180, 15421475, 17888911, 20099900, 30842950, 35777822, 61685900, 71555644, 89444555, 178889110, 357778220, 447222775, 894445550, 1788891100]

約数ペア:

[(1, 1788891100), (2, 894445550), (4, 447222775), (5, 357778220), (10, 178889110), (20, 89444555), (25, 71555644), (29, 61685900), (50, 35777822), (58, 30842950), (89, 20099900), (100, 17888911), (116, 15421475), (145, 12337180), (178, 10049950), (239, 7484900), (290, 6168590), (356, 5024975), (445, 4019980), (478, 3742450), (580, 3084295), (725, 2467436), (841, 2127100), (890, 2009990), (956, 1871225), (1195, 1496980), (1450, 1233718), (1682, 1063550), (1780, 1004995), (2225, 803996), (2390, 748490), (2581, 693100), (2900, 616859), (3364, 531775), (4205, 425420), (4450, 401998), (4780, 374245), (5162, 346550), (5975, 299396), (6931, 258100), (8410, 212710), (8900, 200999), (10324, 173275), (11950, 149698), (12905, 138620), (13862, 129050), (16820, 106355), (21025, 85084), (21271, 84100), (23900, 74849), (25810, 69310), (27724, 64525), (34655, 51620), (42050, 42542)]