21057723

素因数分解:

$3^2\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{383}}^1$

素因数の和:579

約数の個数: 24

約数和(自身を含む): 31449600

約数和(自身を除く): 10391877

約数列:

[1, 3, 9, 41, 123, 149, 369, 383, 447, 1149, 1341, 3447, 6109, 15703, 18327, 47109, 54981, 57067, 141327, 171201, 513603, 2339747, 7019241, 21057723]

約数ペア:

[(1, 21057723), (3, 7019241), (9, 2339747), (41, 513603), (123, 171201), (149, 141327), (369, 57067), (383, 54981), (447, 47109), (1149, 18327), (1341, 15703), (3447, 6109)]