209351680

素因数分解:

$2^{10}\times 5^1\times {\mathrm{31}}^1\times {\mathrm{1319}}^1$

素因数の和:1375

約数の個数: 88

約数和(自身を含む): 518791680

約数和(自身を除く): 309440000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 128, 155, 160, 248, 256, 310, 320, 496, 512, 620, 640, 992, 1024, 1240, 1280, 1319, 1984, 2480, 2560, 2638, 3968, 4960, 5120, 5276, 6595, 7936, 9920, 10552, 13190, 15872, 19840, 21104, 26380, 31744, 39680, 40889, 42208, 52760, 79360, 81778, 84416, 105520, 158720, 163556, 168832, 204445, 211040, 327112, 337664, 408890, 422080, 654224, 675328, 817780, 844160, 1308448, 1350656, 1635560, 1688320, 2616896, 3271120, 3376640, 5233792, 6542240, 6753280, 10467584, 13084480, 20935168, 26168960, 41870336, 52337920, 104675840, 209351680]

約数ペア:

[(1, 209351680), (2, 104675840), (4, 52337920), (5, 41870336), (8, 26168960), (10, 20935168), (16, 13084480), (20, 10467584), (31, 6753280), (32, 6542240), (40, 5233792), (62, 3376640), (64, 3271120), (80, 2616896), (124, 1688320), (128, 1635560), (155, 1350656), (160, 1308448), (248, 844160), (256, 817780), (310, 675328), (320, 654224), (496, 422080), (512, 408890), (620, 337664), (640, 327112), (992, 211040), (1024, 204445), (1240, 168832), (1280, 163556), (1319, 158720), (1984, 105520), (2480, 84416), (2560, 81778), (2638, 79360), (3968, 52760), (4960, 42208), (5120, 40889), (5276, 39680), (6595, 31744), (7936, 26380), (9920, 21104), (10552, 19840), (13190, 15872)]