221378640

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{313}}^1\times {\mathrm{421}}^1$

素因数の和:757

約数の個数: 160

約数和(自身を含む): 788687616

約数和(自身を除く): 567308976

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, 313, 336, 420, 421, 560, 626, 840, 842, 939, 1252, 1263, 1565, 1680, 1684, 1878, 2105, 2191, 2504, 2526, 2947, 3130, 3368, 3756, 4210, 4382, 4695, 5008, 5052, 5894, 6260, 6315, 6573, 6736, 7512, 8420, 8764, 8841, 9390, 10104, 10955, 11788, 12520, 12630, 13146, 14735, 15024, 16840, 17528, 17682, 18780, 20208, 21910, 23576, 25040, 25260, 26292, 29470, 32865, 33680, 35056, 35364, 37560, 43820, 44205, 47152, 50520, 52584, 58940, 65730, 70728, 75120, 87640, 88410, 101040, 105168, 117880, 131460, 131773, 141456, 175280, 176820, 235760, 262920, 263546, 353640, 395319, 525840, 527092, 658865, 707280, 790638, 922411, 1054184, 1317730, 1581276, 1844822, 1976595, 2108368, 2635460, 2767233, 3162552, 3689644, 3953190, 4612055, 5270920, 5534466, 6325104, 7379288, 7906380, 9224110, 10541840, 11068932, 13836165, 14758576, 15812760, 18448220, 22137864, 27672330, 31625520, 36896440, 44275728, 55344660, 73792880, 110689320, 221378640]

約数ペア:

[(1, 221378640), (2, 110689320), (3, 73792880), (4, 55344660), (5, 44275728), (6, 36896440), (7, 31625520), (8, 27672330), (10, 22137864), (12, 18448220), (14, 15812760), (15, 14758576), (16, 13836165), (20, 11068932), (21, 10541840), (24, 9224110), (28, 7906380), (30, 7379288), (35, 6325104), (40, 5534466), (42, 5270920), (48, 4612055), (56, 3953190), (60, 3689644), (70, 3162552), (80, 2767233), (84, 2635460), (105, 2108368), (112, 1976595), (120, 1844822), (140, 1581276), (168, 1317730), (210, 1054184), (240, 922411), (280, 790638), (313, 707280), (336, 658865), (420, 527092), (421, 525840), (560, 395319), (626, 353640), (840, 263546), (842, 262920), (939, 235760), (1252, 176820), (1263, 175280), (1565, 141456), (1680, 131773), (1684, 131460), (1878, 117880), (2105, 105168), (2191, 101040), (2504, 88410), (2526, 87640), (2947, 75120), (3130, 70728), (3368, 65730), (3756, 58940), (4210, 52584), (4382, 50520), (4695, 47152), (5008, 44205), (5052, 43820), (5894, 37560), (6260, 35364), (6315, 35056), (6573, 33680), (6736, 32865), (7512, 29470), (8420, 26292), (8764, 25260), (8841, 25040), (9390, 23576), (10104, 21910), (10955, 20208), (11788, 18780), (12520, 17682), (12630, 17528), (13146, 16840), (14735, 15024)]