21584720

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{4027}}^1$

素因数の和:4107

約数の個数: 40

約数和(自身を含む): 50946144

約数和(自身を除く): 29361424

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 4027, 5360, 8054, 16108, 20135, 32216, 40270, 64432, 80540, 161080, 269809, 322160, 539618, 1079236, 1349045, 2158472, 2698090, 4316944, 5396180, 10792360, 21584720]

約数ペア:

[(1, 21584720), (2, 10792360), (4, 5396180), (5, 4316944), (8, 2698090), (10, 2158472), (16, 1349045), (20, 1079236), (40, 539618), (67, 322160), (80, 269809), (134, 161080), (268, 80540), (335, 64432), (536, 40270), (670, 32216), (1072, 20135), (1340, 16108), (2680, 8054), (4027, 5360)]