31618720

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{37}}^1\times {\mathrm{109}}^1$

素因数の和:175

約数の個数: 144

約数和(自身を含む): 90062280

約数和(自身を除く): 58443560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 37, 40, 49, 56, 70, 74, 80, 98, 109, 112, 140, 148, 160, 185, 196, 218, 224, 245, 259, 280, 296, 370, 392, 436, 490, 518, 545, 560, 592, 740, 763, 784, 872, 980, 1036, 1090, 1120, 1184, 1295, 1480, 1526, 1568, 1744, 1813, 1960, 2072, 2180, 2590, 2960, 3052, 3488, 3626, 3815, 3920, 4033, 4144, 4360, 5180, 5341, 5920, 6104, 7252, 7630, 7840, 8066, 8288, 8720, 9065, 10360, 10682, 12208, 14504, 15260, 16132, 17440, 18130, 20165, 20720, 21364, 24416, 26705, 28231, 29008, 30520, 32264, 36260, 40330, 41440, 42728, 53410, 56462, 58016, 61040, 64528, 72520, 80660, 85456, 106820, 112924, 122080, 129056, 141155, 145040, 161320, 170912, 197617, 213640, 225848, 282310, 290080, 322640, 395234, 427280, 451696, 564620, 645280, 790468, 854560, 903392, 988085, 1129240, 1580936, 1976170, 2258480, 3161872, 3952340, 4516960, 6323744, 7904680, 15809360, 31618720]

約数ペア:

[(1, 31618720), (2, 15809360), (4, 7904680), (5, 6323744), (7, 4516960), (8, 3952340), (10, 3161872), (14, 2258480), (16, 1976170), (20, 1580936), (28, 1129240), (32, 988085), (35, 903392), (37, 854560), (40, 790468), (49, 645280), (56, 564620), (70, 451696), (74, 427280), (80, 395234), (98, 322640), (109, 290080), (112, 282310), (140, 225848), (148, 213640), (160, 197617), (185, 170912), (196, 161320), (218, 145040), (224, 141155), (245, 129056), (259, 122080), (280, 112924), (296, 106820), (370, 85456), (392, 80660), (436, 72520), (490, 64528), (518, 61040), (545, 58016), (560, 56462), (592, 53410), (740, 42728), (763, 41440), (784, 40330), (872, 36260), (980, 32264), (1036, 30520), (1090, 29008), (1120, 28231), (1184, 26705), (1295, 24416), (1480, 21364), (1526, 20720), (1568, 20165), (1744, 18130), (1813, 17440), (1960, 16132), (2072, 15260), (2180, 14504), (2590, 12208), (2960, 10682), (3052, 10360), (3488, 9065), (3626, 8720), (3815, 8288), (3920, 8066), (4033, 7840), (4144, 7630), (4360, 7252), (5180, 6104), (5341, 5920)]