21368240

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{7219}}^1$

素因数の和:7269

約数の個数: 40

約数和(自身を含む): 51030960

約数和(自身を除く): 29662720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 7219, 14438, 28876, 36095, 57752, 72190, 115504, 144380, 267103, 288760, 534206, 577520, 1068412, 1335515, 2136824, 2671030, 4273648, 5342060, 10684120, 21368240]

約数ペア:

[(1, 21368240), (2, 10684120), (4, 5342060), (5, 4273648), (8, 2671030), (10, 2136824), (16, 1335515), (20, 1068412), (37, 577520), (40, 534206), (74, 288760), (80, 267103), (148, 144380), (185, 115504), (296, 72190), (370, 57752), (592, 36095), (740, 28876), (1480, 14438), (2960, 7219)]