20517720

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{8999}}^1$

素因数の和:9032

約数の個数: 64

約数和(自身を含む): 64800000

約数和(自身を除く): 44282280

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 19, 20, 24, 30, 38, 40, 57, 60, 76, 95, 114, 120, 152, 190, 228, 285, 380, 456, 570, 760, 1140, 2280, 8999, 17998, 26997, 35996, 44995, 53994, 71992, 89990, 107988, 134985, 170981, 179980, 215976, 269970, 341962, 359960, 512943, 539940, 683924, 854905, 1025886, 1079880, 1367848, 1709810, 2051772, 2564715, 3419620, 4103544, 5129430, 6839240, 10258860, 20517720]

約数ペア:

[(1, 20517720), (2, 10258860), (3, 6839240), (4, 5129430), (5, 4103544), (6, 3419620), (8, 2564715), (10, 2051772), (12, 1709810), (15, 1367848), (19, 1079880), (20, 1025886), (24, 854905), (30, 683924), (38, 539940), (40, 512943), (57, 359960), (60, 341962), (76, 269970), (95, 215976), (114, 179980), (120, 170981), (152, 134985), (190, 107988), (228, 89990), (285, 71992), (380, 53994), (456, 44995), (570, 35996), (760, 26997), (1140, 17998), (2280, 8999)]