20805217209

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2699}}^1\times {\mathrm{3947}}^1$

素因数の和:6690

約数の個数: 48

約数和(自身を含む): 35475148800

約数和(自身を除く): 14669931591

約数列:

[1, 3, 7, 9, 21, 31, 63, 93, 217, 279, 651, 1953, 2699, 3947, 8097, 11841, 18893, 24291, 27629, 35523, 56679, 82887, 83669, 122357, 170037, 248661, 251007, 367071, 585683, 753021, 856499, 1101213, 1757049, 2569497, 5271147, 7708491, 10652953, 31958859, 74570671, 95876577, 223712013, 330241543, 671136039, 990724629, 2311690801, 2972173887, 6935072403, 20805217209]

約数ペア:

[(1, 20805217209), (3, 6935072403), (7, 2972173887), (9, 2311690801), (21, 990724629), (31, 671136039), (63, 330241543), (93, 223712013), (217, 95876577), (279, 74570671), (651, 31958859), (1953, 10652953), (2699, 7708491), (3947, 5271147), (8097, 2569497), (11841, 1757049), (18893, 1101213), (24291, 856499), (27629, 753021), (35523, 585683), (56679, 367071), (82887, 251007), (83669, 248661), (122357, 170037)]