19990970

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1093}}^1$

素因数の和:1190

約数の個数: 32

約数和(自身を含む): 37808640

約数和(自身を除く): 17817670

約数列:

[1, 2, 5, 10, 31, 59, 62, 118, 155, 295, 310, 590, 1093, 1829, 2186, 3658, 5465, 9145, 10930, 18290, 33883, 64487, 67766, 128974, 169415, 322435, 338830, 644870, 1999097, 3998194, 9995485, 19990970]

約数ペア:

[(1, 19990970), (2, 9995485), (5, 3998194), (10, 1999097), (31, 644870), (59, 338830), (62, 322435), (118, 169415), (155, 128974), (295, 67766), (310, 64487), (590, 33883), (1093, 18290), (1829, 10930), (2186, 9145), (3658, 5465)]