21075520

素因数分解:

$2^6\times 5^1\times {\mathrm{67}}^1\times {\mathrm{983}}^1$

素因数の和:1067

約数の個数: 56

約数和(自身を含む): 50986944

約数和(自身を除く): 29911424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 134, 160, 268, 320, 335, 536, 670, 983, 1072, 1340, 1966, 2144, 2680, 3932, 4288, 4915, 5360, 7864, 9830, 10720, 15728, 19660, 21440, 31456, 39320, 62912, 65861, 78640, 131722, 157280, 263444, 314560, 329305, 526888, 658610, 1053776, 1317220, 2107552, 2634440, 4215104, 5268880, 10537760, 21075520]

約数ペア:

[(1, 21075520), (2, 10537760), (4, 5268880), (5, 4215104), (8, 2634440), (10, 2107552), (16, 1317220), (20, 1053776), (32, 658610), (40, 526888), (64, 329305), (67, 314560), (80, 263444), (134, 157280), (160, 131722), (268, 78640), (320, 65861), (335, 62912), (536, 39320), (670, 31456), (983, 21440), (1072, 19660), (1340, 15728), (1966, 10720), (2144, 9830), (2680, 7864), (3932, 5360), (4288, 4915)]