21648368

素因数分解:

$2^4\times 7^1\times {\mathrm{283}}^1\times {\mathrm{683}}^1$

素因数の和:981

約数の個数: 40

約数和(自身を含む): 48175488

約数和(自身を除く): 26527120

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 283, 566, 683, 1132, 1366, 1981, 2264, 2732, 3962, 4528, 4781, 5464, 7924, 9562, 10928, 15848, 19124, 31696, 38248, 76496, 193289, 386578, 773156, 1353023, 1546312, 2706046, 3092624, 5412092, 10824184, 21648368]

約数ペア:

[(1, 21648368), (2, 10824184), (4, 5412092), (7, 3092624), (8, 2706046), (14, 1546312), (16, 1353023), (28, 773156), (56, 386578), (112, 193289), (283, 76496), (566, 38248), (683, 31696), (1132, 19124), (1366, 15848), (1981, 10928), (2264, 9562), (2732, 7924), (3962, 5464), (4528, 4781)]