20721232

素因数分解:

$2^4\times 7^1\times {\mathrm{17}}^1\times {\mathrm{10883}}^1$

素因数の和:10915

約数の個数: 40

約数和(自身を含む): 48586176

約数和(自身を除く): 27864944

約数列:

[1, 2, 4, 7, 8, 14, 16, 17, 28, 34, 56, 68, 112, 119, 136, 238, 272, 476, 952, 1904, 10883, 21766, 43532, 76181, 87064, 152362, 174128, 185011, 304724, 370022, 609448, 740044, 1218896, 1295077, 1480088, 2590154, 2960176, 5180308, 10360616, 20721232]

約数ペア:

[(1, 20721232), (2, 10360616), (4, 5180308), (7, 2960176), (8, 2590154), (14, 1480088), (16, 1295077), (17, 1218896), (28, 740044), (34, 609448), (56, 370022), (68, 304724), (112, 185011), (119, 174128), (136, 152362), (238, 87064), (272, 76181), (476, 43532), (952, 21766), (1904, 10883)]