221707920

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{131969}}^1$

素因数の和:131992

約数の個数: 80

約数和(自身を含む): 785485440

約数和(自身を除く): 563777520

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 131969, 263938, 395907, 527876, 659845, 791814, 923783, 1055752, 1319690, 1583628, 1847566, 1979535, 2111504, 2639380, 2771349, 3167256, 3695132, 3959070, 4618915, 5278760, 5542698, 6334512, 7390264, 7918140, 9237830, 10557520, 11085396, 13856745, 14780528, 15836280, 18475660, 22170792, 27713490, 31672560, 36951320, 44341584, 55426980, 73902640, 110853960, 221707920]

約数ペア:

[(1, 221707920), (2, 110853960), (3, 73902640), (4, 55426980), (5, 44341584), (6, 36951320), (7, 31672560), (8, 27713490), (10, 22170792), (12, 18475660), (14, 15836280), (15, 14780528), (16, 13856745), (20, 11085396), (21, 10557520), (24, 9237830), (28, 7918140), (30, 7390264), (35, 6334512), (40, 5542698), (42, 5278760), (48, 4618915), (56, 3959070), (60, 3695132), (70, 3167256), (80, 2771349), (84, 2639380), (105, 2111504), (112, 1979535), (120, 1847566), (140, 1583628), (168, 1319690), (210, 1055752), (240, 923783), (280, 791814), (336, 659845), (420, 527876), (560, 395907), (840, 263938), (1680, 131969)]