20496320

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^2\times {\mathrm{379}}^1$

素因数の和:422

約数の個数: 84

約数和(自身を含む): 52989480

約数和(自身を除く): 32493160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 169, 208, 260, 320, 338, 379, 416, 520, 676, 758, 832, 845, 1040, 1352, 1516, 1690, 1895, 2080, 2704, 3032, 3380, 3790, 4160, 4927, 5408, 6064, 6760, 7580, 9854, 10816, 12128, 13520, 15160, 19708, 24256, 24635, 27040, 30320, 39416, 49270, 54080, 60640, 64051, 78832, 98540, 121280, 128102, 157664, 197080, 256204, 315328, 320255, 394160, 512408, 640510, 788320, 1024816, 1281020, 1576640, 2049632, 2562040, 4099264, 5124080, 10248160, 20496320]

約数ペア:

[(1, 20496320), (2, 10248160), (4, 5124080), (5, 4099264), (8, 2562040), (10, 2049632), (13, 1576640), (16, 1281020), (20, 1024816), (26, 788320), (32, 640510), (40, 512408), (52, 394160), (64, 320255), (65, 315328), (80, 256204), (104, 197080), (130, 157664), (160, 128102), (169, 121280), (208, 98540), (260, 78832), (320, 64051), (338, 60640), (379, 54080), (416, 49270), (520, 39416), (676, 30320), (758, 27040), (832, 24635), (845, 24256), (1040, 19708), (1352, 15160), (1516, 13520), (1690, 12128), (1895, 10816), (2080, 9854), (2704, 7580), (3032, 6760), (3380, 6064), (3790, 5408), (4160, 4927)]