21051796688

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{787}}^1\times {\mathrm{128603}}^1$

素因数の和:129411

約数の個数: 40

約数和(自身を含む): 43981539168

約数和(自身を除く): 22929742480

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 787, 1574, 3148, 6296, 10231, 12592, 20462, 40924, 81848, 128603, 163696, 257206, 514412, 1028824, 1671839, 2057648, 3343678, 6687356, 13374712, 26749424, 101210561, 202421122, 404842244, 809684488, 1315737293, 1619368976, 2631474586, 5262949172, 10525898344, 21051796688]

約数ペア:

[(1, 21051796688), (2, 10525898344), (4, 5262949172), (8, 2631474586), (13, 1619368976), (16, 1315737293), (26, 809684488), (52, 404842244), (104, 202421122), (208, 101210561), (787, 26749424), (1574, 13374712), (3148, 6687356), (6296, 3343678), (10231, 2057648), (12592, 1671839), (20462, 1028824), (40924, 514412), (81848, 257206), (128603, 163696)]