645801981

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{653}}^1\times {\mathrm{1303}}^1$

素因数の和:1993

約数の個数: 32

約数和(自身を含む): 982444032

約数和(自身を除く): 336642051

約数列:

[1, 3, 11, 23, 33, 69, 253, 653, 759, 1303, 1959, 3909, 7183, 14333, 15019, 21549, 29969, 42999, 45057, 89907, 165209, 329659, 495627, 850859, 988977, 2552577, 9359449, 19569757, 28078347, 58709271, 215267327, 645801981]

約数ペア:

[(1, 645801981), (3, 215267327), (11, 58709271), (23, 28078347), (33, 19569757), (69, 9359449), (253, 2552577), (653, 988977), (759, 850859), (1303, 495627), (1959, 329659), (3909, 165209), (7183, 89907), (14333, 45057), (15019, 42999), (21549, 29969)]