209790

素因数分解:

$2^1\times 3^4\times 5^1\times 7^1\times {\mathrm{37}}^1$

素因数の和:63

約数の個数: 80

約数和(自身を含む): 662112

約数和(自身を除く): 452322

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 37, 42, 45, 54, 63, 70, 74, 81, 90, 105, 111, 126, 135, 162, 185, 189, 210, 222, 259, 270, 315, 333, 370, 378, 405, 518, 555, 567, 630, 666, 777, 810, 945, 999, 1110, 1134, 1295, 1554, 1665, 1890, 1998, 2331, 2590, 2835, 2997, 3330, 3885, 4662, 4995, 5670, 5994, 6993, 7770, 9990, 11655, 13986, 14985, 20979, 23310, 29970, 34965, 41958, 69930, 104895, 209790]

約数ペア:

[(1, 209790), (2, 104895), (3, 69930), (5, 41958), (6, 34965), (7, 29970), (9, 23310), (10, 20979), (14, 14985), (15, 13986), (18, 11655), (21, 9990), (27, 7770), (30, 6993), (35, 5994), (37, 5670), (42, 4995), (45, 4662), (54, 3885), (63, 3330), (70, 2997), (74, 2835), (81, 2590), (90, 2331), (105, 1998), (111, 1890), (126, 1665), (135, 1554), (162, 1295), (185, 1134), (189, 1110), (210, 999), (222, 945), (259, 810), (270, 777), (315, 666), (333, 630), (370, 567), (378, 555), (405, 518)]