404220160

素因数分解:

$2^8\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{167}}^1$

素因数の和:280

約数の個数: 144

約数和(自身を含む): 1021934592

約数和(自身を除く): 617714432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 61, 62, 64, 80, 122, 124, 128, 155, 160, 167, 244, 248, 256, 305, 310, 320, 334, 488, 496, 610, 620, 640, 668, 835, 976, 992, 1220, 1240, 1280, 1336, 1670, 1891, 1952, 1984, 2440, 2480, 2672, 3340, 3782, 3904, 3968, 4880, 4960, 5177, 5344, 6680, 7564, 7808, 7936, 9455, 9760, 9920, 10187, 10354, 10688, 13360, 15128, 15616, 18910, 19520, 19840, 20374, 20708, 21376, 25885, 26720, 30256, 37820, 39040, 39680, 40748, 41416, 42752, 50935, 51770, 53440, 60512, 75640, 78080, 81496, 82832, 101870, 103540, 106880, 121024, 151280, 162992, 165664, 203740, 207080, 213760, 242048, 302560, 315797, 325984, 331328, 407480, 414160, 484096, 605120, 631594, 651968, 662656, 814960, 828320, 1210240, 1263188, 1303936, 1325312, 1578985, 1629920, 1656640, 2420480, 2526376, 2607872, 3157970, 3259840, 3313280, 5052752, 6315940, 6519680, 6626560, 10105504, 12631880, 13039360, 20211008, 25263760, 40422016, 50527520, 80844032, 101055040, 202110080, 404220160]

約数ペア:

[(1, 404220160), (2, 202110080), (4, 101055040), (5, 80844032), (8, 50527520), (10, 40422016), (16, 25263760), (20, 20211008), (31, 13039360), (32, 12631880), (40, 10105504), (61, 6626560), (62, 6519680), (64, 6315940), (80, 5052752), (122, 3313280), (124, 3259840), (128, 3157970), (155, 2607872), (160, 2526376), (167, 2420480), (244, 1656640), (248, 1629920), (256, 1578985), (305, 1325312), (310, 1303936), (320, 1263188), (334, 1210240), (488, 828320), (496, 814960), (610, 662656), (620, 651968), (640, 631594), (668, 605120), (835, 484096), (976, 414160), (992, 407480), (1220, 331328), (1240, 325984), (1280, 315797), (1336, 302560), (1670, 242048), (1891, 213760), (1952, 207080), (1984, 203740), (2440, 165664), (2480, 162992), (2672, 151280), (3340, 121024), (3782, 106880), (3904, 103540), (3968, 101870), (4880, 82832), (4960, 81496), (5177, 78080), (5344, 75640), (6680, 60512), (7564, 53440), (7808, 51770), (7936, 50935), (9455, 42752), (9760, 41416), (9920, 40748), (10187, 39680), (10354, 39040), (10688, 37820), (13360, 30256), (15128, 26720), (15616, 25885), (18910, 21376), (19520, 20708), (19840, 20374)]