639883989

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{773}}^1$

素因数の和:879

約数の個数: 64

約数和(自身を含む): 1046200320

約数和(自身を除く): 406316331

約数列:

[1, 3, 9, 23, 27, 31, 43, 69, 93, 129, 207, 279, 387, 621, 713, 773, 837, 989, 1161, 1333, 2139, 2319, 2967, 3999, 6417, 6957, 8901, 11997, 17779, 19251, 20871, 23963, 26703, 30659, 33239, 35991, 53337, 71889, 91977, 99717, 160011, 215667, 275931, 299151, 480033, 551149, 647001, 764497, 827793, 897453, 1030409, 1653447, 2293491, 3091227, 4960341, 6880473, 9273681, 14881023, 20641419, 23699407, 27821043, 71098221, 213294663, 639883989]

約数ペア:

[(1, 639883989), (3, 213294663), (9, 71098221), (23, 27821043), (27, 23699407), (31, 20641419), (43, 14881023), (69, 9273681), (93, 6880473), (129, 4960341), (207, 3091227), (279, 2293491), (387, 1653447), (621, 1030409), (713, 897453), (773, 827793), (837, 764497), (989, 647001), (1161, 551149), (1333, 480033), (2139, 299151), (2319, 275931), (2967, 215667), (3999, 160011), (6417, 99717), (6957, 91977), (8901, 71889), (11997, 53337), (17779, 35991), (19251, 33239), (20871, 30659), (23963, 26703)]