201912880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{1303}}^1$

素因数の和:1478

約数の個数: 80

約数和(自身を含む): 509342400

約数和(自身を除く): 307429520

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 149, 208, 260, 298, 520, 596, 745, 1040, 1192, 1303, 1490, 1937, 2384, 2606, 2980, 3874, 5212, 5960, 6515, 7748, 9685, 10424, 11920, 13030, 15496, 16939, 19370, 20848, 26060, 30992, 33878, 38740, 52120, 67756, 77480, 84695, 104240, 135512, 154960, 169390, 194147, 271024, 338780, 388294, 677560, 776588, 970735, 1355120, 1553176, 1941470, 2523911, 3106352, 3882940, 5047822, 7765880, 10095644, 12619555, 15531760, 20191288, 25239110, 40382576, 50478220, 100956440, 201912880]

約数ペア:

[(1, 201912880), (2, 100956440), (4, 50478220), (5, 40382576), (8, 25239110), (10, 20191288), (13, 15531760), (16, 12619555), (20, 10095644), (26, 7765880), (40, 5047822), (52, 3882940), (65, 3106352), (80, 2523911), (104, 1941470), (130, 1553176), (149, 1355120), (208, 970735), (260, 776588), (298, 677560), (520, 388294), (596, 338780), (745, 271024), (1040, 194147), (1192, 169390), (1303, 154960), (1490, 135512), (1937, 104240), (2384, 84695), (2606, 77480), (2980, 67756), (3874, 52120), (5212, 38740), (5960, 33878), (6515, 30992), (7748, 26060), (9685, 20848), (10424, 19370), (11920, 16939), (13030, 15496)]