208757979

素因数分解:

$3^4\times {\mathrm{29}}^1\times {\mathrm{181}}^1\times {\mathrm{491}}^1$

素因数の和:713

約数の個数: 40

約数和(自身を含む): 325044720

約数和(自身を除く): 116286741

約数列:

[1, 3, 9, 27, 29, 81, 87, 181, 261, 491, 543, 783, 1473, 1629, 2349, 4419, 4887, 5249, 13257, 14239, 14661, 15747, 39771, 42717, 47241, 88871, 128151, 141723, 266613, 384453, 425169, 799839, 1153359, 2399517, 2577259, 7198551, 7731777, 23195331, 69585993, 208757979]

約数ペア:

[(1, 208757979), (3, 69585993), (9, 23195331), (27, 7731777), (29, 7198551), (81, 2577259), (87, 2399517), (181, 1153359), (261, 799839), (491, 425169), (543, 384453), (783, 266613), (1473, 141723), (1629, 128151), (2349, 88871), (4419, 47241), (4887, 42717), (5249, 39771), (13257, 15747), (14239, 14661)]