20779269

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{541}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 33300480

約数和(自身を除く): 12521211

約数列:

[1, 3, 7, 21, 31, 59, 93, 177, 217, 413, 541, 651, 1239, 1623, 1829, 3787, 5487, 11361, 12803, 16771, 31919, 38409, 50313, 95757, 117397, 223433, 352191, 670299, 989489, 2968467, 6926423, 20779269]

約数ペア:

[(1, 20779269), (3, 6926423), (7, 2968467), (21, 989489), (31, 670299), (59, 352191), (93, 223433), (177, 117397), (217, 95757), (413, 50313), (541, 38409), (651, 31919), (1239, 16771), (1623, 12803), (1829, 11361), (3787, 5487)]