291686689

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{157}}^1\times {\mathrm{229}}^1$

素因数の和:473

約数の個数: 32

約数和(自身を含む): 360492800

約数和(自身を除く): 68806111

約数列:

[1, 7, 19, 61, 133, 157, 229, 427, 1099, 1159, 1603, 2983, 4351, 8113, 9577, 13969, 20881, 30457, 35953, 67039, 97783, 181963, 251671, 265411, 683107, 1273741, 1857877, 2193133, 4781749, 15351931, 41669527, 291686689]

約数ペア:

[(1, 291686689), (7, 41669527), (19, 15351931), (61, 4781749), (133, 2193133), (157, 1857877), (229, 1273741), (427, 683107), (1099, 265411), (1159, 251671), (1603, 181963), (2983, 97783), (4351, 67039), (8113, 35953), (9577, 30457), (13969, 20881)]