21057660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{8999}}^1$

素因数の和:9027

約数の個数: 72

約数和(自身を含む): 68796000

約数和(自身を除く): 47738340

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 8999, 17998, 26997, 35996, 44995, 53994, 80991, 89990, 107988, 116987, 134985, 161982, 179980, 233974, 269970, 323964, 350961, 404955, 467948, 539940, 584935, 701922, 809910, 1052883, 1169870, 1403844, 1619820, 1754805, 2105766, 2339740, 3509610, 4211532, 5264415, 7019220, 10528830, 21057660]

約数ペア:

[(1, 21057660), (2, 10528830), (3, 7019220), (4, 5264415), (5, 4211532), (6, 3509610), (9, 2339740), (10, 2105766), (12, 1754805), (13, 1619820), (15, 1403844), (18, 1169870), (20, 1052883), (26, 809910), (30, 701922), (36, 584935), (39, 539940), (45, 467948), (52, 404955), (60, 350961), (65, 323964), (78, 269970), (90, 233974), (117, 179980), (130, 161982), (156, 134985), (180, 116987), (195, 107988), (234, 89990), (260, 80991), (390, 53994), (468, 44995), (585, 35996), (780, 26997), (1170, 17998), (2340, 8999)]