21430880

素因数分解:

$2^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{7879}}^1$

素因数の和:7911

約数の個数: 48

約数和(自身を含む): 53615520

約数和(自身を除く): 32184640

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 68, 80, 85, 136, 160, 170, 272, 340, 544, 680, 1360, 2720, 7879, 15758, 31516, 39395, 63032, 78790, 126064, 133943, 157580, 252128, 267886, 315160, 535772, 630320, 669715, 1071544, 1260640, 1339430, 2143088, 2678860, 4286176, 5357720, 10715440, 21430880]

約数ペア:

[(1, 21430880), (2, 10715440), (4, 5357720), (5, 4286176), (8, 2678860), (10, 2143088), (16, 1339430), (17, 1260640), (20, 1071544), (32, 669715), (34, 630320), (40, 535772), (68, 315160), (80, 267886), (85, 252128), (136, 157580), (160, 133943), (170, 126064), (272, 78790), (340, 63032), (544, 39395), (680, 31516), (1360, 15758), (2720, 7879)]