21984160

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{12491}}^1$

素因数の和:12517

約数の個数: 48

約数和(自身を含む): 56663712

約数和(自身を除く): 34679552

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 32, 40, 44, 55, 80, 88, 110, 160, 176, 220, 352, 440, 880, 1760, 12491, 24982, 49964, 62455, 99928, 124910, 137401, 199856, 249820, 274802, 399712, 499640, 549604, 687005, 999280, 1099208, 1374010, 1998560, 2198416, 2748020, 4396832, 5496040, 10992080, 21984160]

約数ペア:

[(1, 21984160), (2, 10992080), (4, 5496040), (5, 4396832), (8, 2748020), (10, 2198416), (11, 1998560), (16, 1374010), (20, 1099208), (22, 999280), (32, 687005), (40, 549604), (44, 499640), (55, 399712), (80, 274802), (88, 249820), (110, 199856), (160, 137401), (176, 124910), (220, 99928), (352, 62455), (440, 49964), (880, 24982), (1760, 12491)]