20208447

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{1229}}^1$

素因数の和:1277

約数の個数: 40

約数和(自身を含む): 35719200

約数和(自身を除く): 15510753

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 1229, 1827, 2349, 3687, 5481, 8603, 11061, 16443, 25809, 33183, 35641, 77427, 99549, 106923, 232281, 249487, 320769, 696843, 748461, 962307, 2245383, 2886921, 6736149, 20208447]

約数ペア:

[(1, 20208447), (3, 6736149), (7, 2886921), (9, 2245383), (21, 962307), (27, 748461), (29, 696843), (63, 320769), (81, 249487), (87, 232281), (189, 106923), (203, 99549), (261, 77427), (567, 35641), (609, 33183), (783, 25809), (1229, 16443), (1827, 11061), (2349, 8603), (3687, 5481)]