21739760

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38821}}^1$

素因数の和:38841

約数の個数: 40

約数和(自身を含む): 57767136

約数和(自身を除く): 36027376

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38821, 77642, 155284, 194105, 271747, 310568, 388210, 543494, 621136, 776420, 1086988, 1358735, 1552840, 2173976, 2717470, 3105680, 4347952, 5434940, 10869880, 21739760]

約数ペア:

[(1, 21739760), (2, 10869880), (4, 5434940), (5, 4347952), (7, 3105680), (8, 2717470), (10, 2173976), (14, 1552840), (16, 1358735), (20, 1086988), (28, 776420), (35, 621136), (40, 543494), (56, 388210), (70, 310568), (80, 271747), (112, 194105), (140, 155284), (280, 77642), (560, 38821)]