64986560

素因数分解:

$2^6\times 5^1\times {\mathrm{311}}^1\times {\mathrm{653}}^1$

素因数の和:981

約数の個数: 56

約数和(自身を含む): 155484576

約数和(自身を除く): 90498016

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 311, 320, 622, 653, 1244, 1306, 1555, 2488, 2612, 3110, 3265, 4976, 5224, 6220, 6530, 9952, 10448, 12440, 13060, 19904, 20896, 24880, 26120, 41792, 49760, 52240, 99520, 104480, 203083, 208960, 406166, 812332, 1015415, 1624664, 2030830, 3249328, 4061660, 6498656, 8123320, 12997312, 16246640, 32493280, 64986560]

約数ペア:

[(1, 64986560), (2, 32493280), (4, 16246640), (5, 12997312), (8, 8123320), (10, 6498656), (16, 4061660), (20, 3249328), (32, 2030830), (40, 1624664), (64, 1015415), (80, 812332), (160, 406166), (311, 208960), (320, 203083), (622, 104480), (653, 99520), (1244, 52240), (1306, 49760), (1555, 41792), (2488, 26120), (2612, 24880), (3110, 20896), (3265, 19904), (4976, 13060), (5224, 12440), (6220, 10448), (6530, 9952)]