21395360

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2729}}^1$

素因数の和:2758

約数の個数: 72

約数和(自身を含む): 58820580

約数和(自身を除く): 37425220

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, 2729, 3920, 5458, 7840, 10916, 13645, 19103, 21832, 27290, 38206, 43664, 54580, 76412, 87328, 95515, 109160, 133721, 152824, 191030, 218320, 267442, 305648, 382060, 436640, 534884, 611296, 668605, 764120, 1069768, 1337210, 1528240, 2139536, 2674420, 3056480, 4279072, 5348840, 10697680, 21395360]

約数ペア:

[(1, 21395360), (2, 10697680), (4, 5348840), (5, 4279072), (7, 3056480), (8, 2674420), (10, 2139536), (14, 1528240), (16, 1337210), (20, 1069768), (28, 764120), (32, 668605), (35, 611296), (40, 534884), (49, 436640), (56, 382060), (70, 305648), (80, 267442), (98, 218320), (112, 191030), (140, 152824), (160, 133721), (196, 109160), (224, 95515), (245, 87328), (280, 76412), (392, 54580), (490, 43664), (560, 38206), (784, 27290), (980, 21832), (1120, 19103), (1568, 13645), (1960, 10916), (2729, 7840), (3920, 5458)]