21802816

素因数分解:

$2^6\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1187}}^1$

素因数の和:1247

約数の個数: 56

約数和(自身を含む): 50694336

約数和(自身を除く): 28891520

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 41, 56, 64, 82, 112, 164, 224, 287, 328, 448, 574, 656, 1148, 1187, 1312, 2296, 2374, 2624, 4592, 4748, 8309, 9184, 9496, 16618, 18368, 18992, 33236, 37984, 48667, 66472, 75968, 97334, 132944, 194668, 265888, 340669, 389336, 531776, 681338, 778672, 1362676, 1557344, 2725352, 3114688, 5450704, 10901408, 21802816]

約数ペア:

[(1, 21802816), (2, 10901408), (4, 5450704), (7, 3114688), (8, 2725352), (14, 1557344), (16, 1362676), (28, 778672), (32, 681338), (41, 531776), (56, 389336), (64, 340669), (82, 265888), (112, 194668), (164, 132944), (224, 97334), (287, 75968), (328, 66472), (448, 48667), (574, 37984), (656, 33236), (1148, 18992), (1187, 18368), (1312, 16618), (2296, 9496), (2374, 9184), (2624, 8309), (4592, 4748)]