21000819855

素因数分解:

$3^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{569}}^1\times {\mathrm{9803}}^1$

素因数の和:10631

約数の個数: 32

約数和(自身を含む): 33797917440

約数和(自身を除く): 12797097585

約数列:

[1, 3, 5, 15, 251, 569, 753, 1255, 1707, 2845, 3765, 8535, 9803, 29409, 49015, 142819, 147045, 428457, 714095, 2142285, 2460553, 5577907, 7381659, 12302765, 16733721, 27889535, 36908295, 83668605, 1400054657, 4200163971, 7000273285, 21000819855]

約数ペア:

[(1, 21000819855), (3, 7000273285), (5, 4200163971), (15, 1400054657), (251, 83668605), (569, 36908295), (753, 27889535), (1255, 16733721), (1707, 12302765), (2845, 7381659), (3765, 5577907), (8535, 2460553), (9803, 2142285), (29409, 714095), (49015, 428457), (142819, 147045)]