21756315

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{383}}^1\times {\mathrm{541}}^1$

素因数の和:939

約数の個数: 32

約数和(自身を含む): 39960576

約数和(自身を除く): 18204261

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 383, 541, 1149, 1623, 1915, 2681, 2705, 3787, 5745, 8043, 8115, 11361, 13405, 18935, 40215, 56805, 207203, 621609, 1036015, 1450421, 3108045, 4351263, 7252105, 21756315]

約数ペア:

[(1, 21756315), (3, 7252105), (5, 4351263), (7, 3108045), (15, 1450421), (21, 1036015), (35, 621609), (105, 207203), (383, 56805), (541, 40215), (1149, 18935), (1623, 13405), (1915, 11361), (2681, 8115), (2705, 8043), (3787, 5745)]