64978880

素因数分解:

$2^6\times 5^1\times {\mathrm{251}}^1\times {\mathrm{809}}^1$

素因数の和:1077

約数の個数: 56

約数和(自身を含む): 155539440

約数和(自身を除く): 90560560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 251, 320, 502, 809, 1004, 1255, 1618, 2008, 2510, 3236, 4016, 4045, 5020, 6472, 8032, 8090, 10040, 12944, 16064, 16180, 20080, 25888, 32360, 40160, 51776, 64720, 80320, 129440, 203059, 258880, 406118, 812236, 1015295, 1624472, 2030590, 3248944, 4061180, 6497888, 8122360, 12995776, 16244720, 32489440, 64978880]

約数ペア:

[(1, 64978880), (2, 32489440), (4, 16244720), (5, 12995776), (8, 8122360), (10, 6497888), (16, 4061180), (20, 3248944), (32, 2030590), (40, 1624472), (64, 1015295), (80, 812236), (160, 406118), (251, 258880), (320, 203059), (502, 129440), (809, 80320), (1004, 64720), (1255, 51776), (1618, 40160), (2008, 32360), (2510, 25888), (3236, 20080), (4016, 16180), (4045, 16064), (5020, 12944), (6472, 10040), (8032, 8090)]