20404864

素因数分解:

$2^7\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{239}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 44064000

約数和(自身を除く): 23659136

約数列:

[1, 2, 4, 8, 16, 23, 29, 32, 46, 58, 64, 92, 116, 128, 184, 232, 239, 368, 464, 478, 667, 736, 928, 956, 1334, 1472, 1856, 1912, 2668, 2944, 3712, 3824, 5336, 5497, 6931, 7648, 10672, 10994, 13862, 15296, 21344, 21988, 27724, 30592, 42688, 43976, 55448, 85376, 87952, 110896, 159413, 175904, 221792, 318826, 351808, 443584, 637652, 703616, 887168, 1275304, 2550608, 5101216, 10202432, 20404864]

約数ペア:

[(1, 20404864), (2, 10202432), (4, 5101216), (8, 2550608), (16, 1275304), (23, 887168), (29, 703616), (32, 637652), (46, 443584), (58, 351808), (64, 318826), (92, 221792), (116, 175904), (128, 159413), (184, 110896), (232, 87952), (239, 85376), (368, 55448), (464, 43976), (478, 42688), (667, 30592), (736, 27724), (928, 21988), (956, 21344), (1334, 15296), (1472, 13862), (1856, 10994), (1912, 10672), (2668, 7648), (2944, 6931), (3712, 5497), (3824, 5336)]