20846560

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2659}}^1$

素因数の和:2688

約数の個数: 72

約数和(自身を含む): 57312360

約数和(自身を除く): 36465800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2659, 3920, 5318, 7840, 10636, 13295, 18613, 21272, 26590, 37226, 42544, 53180, 74452, 85088, 93065, 106360, 130291, 148904, 186130, 212720, 260582, 297808, 372260, 425440, 521164, 595616, 651455, 744520, 1042328, 1302910, 1489040, 2084656, 2605820, 2978080, 4169312, 5211640, 10423280, 20846560]

約数ペア:

[(1, 20846560), (2, 10423280), (4, 5211640), (5, 4169312), (7, 2978080), (8, 2605820), (10, 2084656), (14, 1489040), (16, 1302910), (20, 1042328), (28, 744520), (32, 651455), (35, 595616), (40, 521164), (49, 425440), (56, 372260), (70, 297808), (80, 260582), (98, 212720), (112, 186130), (140, 148904), (160, 130291), (196, 106360), (224, 93065), (245, 85088), (280, 74452), (392, 53180), (490, 42544), (560, 37226), (784, 26590), (980, 21272), (1120, 18613), (1568, 13295), (1960, 10636), (2659, 7840), (3920, 5318)]