21431880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{1609}}^1$

素因数の和:1663

約数の個数: 96

約数和(自身を含む): 71580600

約数和(自身を除く): 50148720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 37, 40, 45, 60, 72, 74, 90, 111, 120, 148, 180, 185, 222, 296, 333, 360, 370, 444, 555, 666, 740, 888, 1110, 1332, 1480, 1609, 1665, 2220, 2664, 3218, 3330, 4440, 4827, 6436, 6660, 8045, 9654, 12872, 13320, 14481, 16090, 19308, 24135, 28962, 32180, 38616, 48270, 57924, 59533, 64360, 72405, 96540, 115848, 119066, 144810, 178599, 193080, 238132, 289620, 297665, 357198, 476264, 535797, 579240, 595330, 714396, 892995, 1071594, 1190660, 1428792, 1785990, 2143188, 2381320, 2678985, 3571980, 4286376, 5357970, 7143960, 10715940, 21431880]

約数ペア:

[(1, 21431880), (2, 10715940), (3, 7143960), (4, 5357970), (5, 4286376), (6, 3571980), (8, 2678985), (9, 2381320), (10, 2143188), (12, 1785990), (15, 1428792), (18, 1190660), (20, 1071594), (24, 892995), (30, 714396), (36, 595330), (37, 579240), (40, 535797), (45, 476264), (60, 357198), (72, 297665), (74, 289620), (90, 238132), (111, 193080), (120, 178599), (148, 144810), (180, 119066), (185, 115848), (222, 96540), (296, 72405), (333, 64360), (360, 59533), (370, 57924), (444, 48270), (555, 38616), (666, 32180), (740, 28962), (888, 24135), (1110, 19308), (1332, 16090), (1480, 14481), (1609, 13320), (1665, 12872), (2220, 9654), (2664, 8045), (3218, 6660), (3330, 6436), (4440, 4827)]