21206075

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1307}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 29194560

約数和(自身を除く): 7988485

約数列:

[1, 5, 11, 25, 55, 59, 275, 295, 649, 1307, 1475, 3245, 6535, 14377, 16225, 32675, 71885, 77113, 359425, 385565, 848243, 1927825, 4241215, 21206075]

約数ペア:

[(1, 21206075), (5, 4241215), (11, 1927825), (25, 848243), (55, 385565), (59, 359425), (275, 77113), (295, 71885), (649, 32675), (1307, 16225), (1475, 14377), (3245, 6535)]