21601760

素因数分解:

$2^5\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1709}}^1$

素因数の和:1803

約数の個数: 48

約数和(自身を含む): 51710400

約数和(自身を除く): 30108640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 79, 80, 158, 160, 316, 395, 632, 790, 1264, 1580, 1709, 2528, 3160, 3418, 6320, 6836, 8545, 12640, 13672, 17090, 27344, 34180, 54688, 68360, 135011, 136720, 270022, 273440, 540044, 675055, 1080088, 1350110, 2160176, 2700220, 4320352, 5400440, 10800880, 21601760]

約数ペア:

[(1, 21601760), (2, 10800880), (4, 5400440), (5, 4320352), (8, 2700220), (10, 2160176), (16, 1350110), (20, 1080088), (32, 675055), (40, 540044), (79, 273440), (80, 270022), (158, 136720), (160, 135011), (316, 68360), (395, 54688), (632, 34180), (790, 27344), (1264, 17090), (1580, 13672), (1709, 12640), (2528, 8545), (3160, 6836), (3418, 6320)]