21840765

素因数分解:

$3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{5801}}^1$

素因数の和:6060

約数の個数: 16

約数和(自身を含む): 35090496

約数和(自身を除く): 13249731

約数列:

[1, 3, 5, 15, 251, 753, 1255, 3765, 5801, 17403, 29005, 87015, 1456051, 4368153, 7280255, 21840765]

約数ペア:

[(1, 21840765), (3, 7280255), (5, 4368153), (15, 1456051), (251, 87015), (753, 29005), (1255, 17403), (3765, 5801)]