20809936

素因数分解:

$2^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1$

素因数の和:236

約数の個数: 80

約数和(自身を含む): 49104000

約数和(自身を除く): 28294064

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 29, 43, 56, 58, 86, 112, 116, 149, 172, 203, 232, 298, 301, 344, 406, 464, 596, 602, 688, 812, 1043, 1192, 1204, 1247, 1624, 2086, 2384, 2408, 2494, 3248, 4172, 4321, 4816, 4988, 6407, 8344, 8642, 8729, 9976, 12814, 16688, 17284, 17458, 19952, 25628, 30247, 34568, 34916, 44849, 51256, 60494, 69136, 69832, 89698, 102512, 120988, 139664, 179396, 185803, 241976, 358792, 371606, 483952, 717584, 743212, 1300621, 1486424, 2601242, 2972848, 5202484, 10404968, 20809936]

約数ペア:

[(1, 20809936), (2, 10404968), (4, 5202484), (7, 2972848), (8, 2601242), (14, 1486424), (16, 1300621), (28, 743212), (29, 717584), (43, 483952), (56, 371606), (58, 358792), (86, 241976), (112, 185803), (116, 179396), (149, 139664), (172, 120988), (203, 102512), (232, 89698), (298, 69832), (301, 69136), (344, 60494), (406, 51256), (464, 44849), (596, 34916), (602, 34568), (688, 30247), (812, 25628), (1043, 19952), (1192, 17458), (1204, 17284), (1247, 16688), (1624, 12814), (2086, 9976), (2384, 8729), (2408, 8642), (2494, 8344), (3248, 6407), (4172, 4988), (4321, 4816)]