21716409

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{227}}^1$

素因数の和:477

約数の個数: 32

約数和(自身を含む): 34320384

約数和(自身を除く): 12603975

約数列:

[1, 3, 11, 13, 33, 39, 143, 223, 227, 429, 669, 681, 2453, 2497, 2899, 2951, 7359, 7491, 8697, 8853, 31889, 32461, 50621, 95667, 97383, 151863, 556831, 658073, 1670493, 1974219, 7238803, 21716409]

約数ペア:

[(1, 21716409), (3, 7238803), (11, 1974219), (13, 1670493), (33, 658073), (39, 556831), (143, 151863), (223, 97383), (227, 95667), (429, 50621), (669, 32461), (681, 31889), (2453, 8853), (2497, 8697), (2899, 7491), (2951, 7359)]