21050552008

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{283}}^1\times {\mathrm{130957}}^1$

素因数の和:131317

約数の個数: 32

約数和(自身を含む): 40167437760

約数和(自身を除く): 19116885752

約数列:

[1, 2, 4, 8, 71, 142, 283, 284, 566, 568, 1132, 2264, 20093, 40186, 80372, 130957, 160744, 261914, 523828, 1047656, 9297947, 18595894, 37060831, 37191788, 74121662, 74383576, 148243324, 296486648, 2631319001, 5262638002, 10525276004, 21050552008]

約数ペア:

[(1, 21050552008), (2, 10525276004), (4, 5262638002), (8, 2631319001), (71, 296486648), (142, 148243324), (283, 74383576), (284, 74121662), (566, 37191788), (568, 37060831), (1132, 18595894), (2264, 9297947), (20093, 1047656), (40186, 523828), (80372, 261914), (130957, 160744)]