20720240

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{11261}}^1$

素因数の和:11297

約数の個数: 40

約数和(自身を含む): 50273568

約数和(自身を除く): 29553328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 80, 92, 115, 184, 230, 368, 460, 920, 1840, 11261, 22522, 45044, 56305, 90088, 112610, 180176, 225220, 259003, 450440, 518006, 900880, 1036012, 1295015, 2072024, 2590030, 4144048, 5180060, 10360120, 20720240]

約数ペア:

[(1, 20720240), (2, 10360120), (4, 5180060), (5, 4144048), (8, 2590030), (10, 2072024), (16, 1295015), (20, 1036012), (23, 900880), (40, 518006), (46, 450440), (80, 259003), (92, 225220), (115, 180176), (184, 112610), (230, 90088), (368, 56305), (460, 45044), (920, 22522), (1840, 11261)]