21266720

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5779}}^1$

素因数の和:5817

約数の個数: 48

約数和(自身を含む): 52436160

約数和(自身を除く): 31169440

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 115, 160, 184, 230, 368, 460, 736, 920, 1840, 3680, 5779, 11558, 23116, 28895, 46232, 57790, 92464, 115580, 132917, 184928, 231160, 265834, 462320, 531668, 664585, 924640, 1063336, 1329170, 2126672, 2658340, 4253344, 5316680, 10633360, 21266720]

約数ペア:

[(1, 21266720), (2, 10633360), (4, 5316680), (5, 4253344), (8, 2658340), (10, 2126672), (16, 1329170), (20, 1063336), (23, 924640), (32, 664585), (40, 531668), (46, 462320), (80, 265834), (92, 231160), (115, 184928), (160, 132917), (184, 115580), (230, 92464), (368, 57790), (460, 46232), (736, 28895), (920, 23116), (1840, 11558), (3680, 5779)]