21307668

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 51166080

約数和(自身を除く): 29858412

約数列:

[1, 2, 3, 4, 6, 12, 71, 89, 142, 178, 213, 267, 281, 284, 356, 426, 534, 562, 843, 852, 1068, 1124, 1686, 3372, 6319, 12638, 18957, 19951, 25009, 25276, 37914, 39902, 50018, 59853, 75027, 75828, 79804, 100036, 119706, 150054, 239412, 300108, 1775639, 3551278, 5326917, 7102556, 10653834, 21307668]

約数ペア:

[(1, 21307668), (2, 10653834), (3, 7102556), (4, 5326917), (6, 3551278), (12, 1775639), (71, 300108), (89, 239412), (142, 150054), (178, 119706), (213, 100036), (267, 79804), (281, 75828), (284, 75027), (356, 59853), (426, 50018), (534, 39902), (562, 37914), (843, 25276), (852, 25009), (1068, 19951), (1124, 18957), (1686, 12638), (3372, 6319)]