20960928

素因数分解:

$2^5\times 3^2\times {\mathrm{73}}^1\times {\mathrm{997}}^1$

素因数の和:1086

約数の個数: 72

約数和(自身を含む): 60484788

約数和(自身を除く): 39523860

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 73, 96, 144, 146, 219, 288, 292, 438, 584, 657, 876, 997, 1168, 1314, 1752, 1994, 2336, 2628, 2991, 3504, 3988, 5256, 5982, 7008, 7976, 8973, 10512, 11964, 15952, 17946, 21024, 23928, 31904, 35892, 47856, 71784, 72781, 95712, 143568, 145562, 218343, 287136, 291124, 436686, 582248, 655029, 873372, 1164496, 1310058, 1746744, 2328992, 2620116, 3493488, 5240232, 6986976, 10480464, 20960928]

約数ペア:

[(1, 20960928), (2, 10480464), (3, 6986976), (4, 5240232), (6, 3493488), (8, 2620116), (9, 2328992), (12, 1746744), (16, 1310058), (18, 1164496), (24, 873372), (32, 655029), (36, 582248), (48, 436686), (72, 291124), (73, 287136), (96, 218343), (144, 145562), (146, 143568), (219, 95712), (288, 72781), (292, 71784), (438, 47856), (584, 35892), (657, 31904), (876, 23928), (997, 21024), (1168, 17946), (1314, 15952), (1752, 11964), (1994, 10512), (2336, 8973), (2628, 7976), (2991, 7008), (3504, 5982), (3988, 5256)]