21377145

素因数分解:

$3^1\times 5^1\times {\mathrm{61}}^2\times {\mathrm{383}}^1$

素因数の和:513

約数の個数: 24

約数和(自身を含む): 34864128

約数和(自身を除く): 13486983

約数列:

[1, 3, 5, 15, 61, 183, 305, 383, 915, 1149, 1915, 3721, 5745, 11163, 18605, 23363, 55815, 70089, 116815, 350445, 1425143, 4275429, 7125715, 21377145]

約数ペア:

[(1, 21377145), (3, 7125715), (5, 4275429), (15, 1425143), (61, 350445), (183, 116815), (305, 70089), (383, 55815), (915, 23363), (1149, 18605), (1915, 11163), (3721, 5745)]