320419760

素因数分解:

$2^4\times 5^1\times {\mathrm{643}}^1\times {\mathrm{6229}}^1$

素因数の和:6885

約数の個数: 40

約数和(自身を含む): 746254320

約数和(自身を除く): 425834560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 643, 1286, 2572, 3215, 5144, 6229, 6430, 10288, 12458, 12860, 24916, 25720, 31145, 49832, 51440, 62290, 99664, 124580, 249160, 498320, 4005247, 8010494, 16020988, 20026235, 32041976, 40052470, 64083952, 80104940, 160209880, 320419760]

約数ペア:

[(1, 320419760), (2, 160209880), (4, 80104940), (5, 64083952), (8, 40052470), (10, 32041976), (16, 20026235), (20, 16020988), (40, 8010494), (80, 4005247), (643, 498320), (1286, 249160), (2572, 124580), (3215, 99664), (5144, 62290), (6229, 51440), (6430, 49832), (10288, 31145), (12458, 25720), (12860, 24916)]