21004356

素因数分解:

$2^2\times 3^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{277}}^1$

素因数の和:444

約数の個数: 48

約数和(自身を含む): 50440320

約数和(自身を除く): 29435964

約数列:

[1, 2, 3, 4, 6, 12, 71, 89, 142, 178, 213, 267, 277, 284, 356, 426, 534, 554, 831, 852, 1068, 1108, 1662, 3324, 6319, 12638, 18957, 19667, 24653, 25276, 37914, 39334, 49306, 59001, 73959, 75828, 78668, 98612, 118002, 147918, 236004, 295836, 1750363, 3500726, 5251089, 7001452, 10502178, 21004356]

約数ペア:

[(1, 21004356), (2, 10502178), (3, 7001452), (4, 5251089), (6, 3500726), (12, 1750363), (71, 295836), (89, 236004), (142, 147918), (178, 118002), (213, 98612), (267, 78668), (277, 75828), (284, 73959), (356, 59001), (426, 49306), (534, 39334), (554, 37914), (831, 25276), (852, 24653), (1068, 19667), (1108, 18957), (1662, 12638), (3324, 6319)]