20531455

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{149}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 29491200

約数和(自身を除く): 8959745

約数列:

[1, 5, 7, 31, 35, 127, 149, 155, 217, 635, 745, 889, 1043, 1085, 3937, 4445, 4619, 5215, 18923, 19685, 23095, 27559, 32333, 94615, 132461, 137795, 161665, 586613, 662305, 2933065, 4106291, 20531455]

約数ペア:

[(1, 20531455), (5, 4106291), (7, 2933065), (31, 662305), (35, 586613), (127, 161665), (149, 137795), (155, 132461), (217, 94615), (635, 32333), (745, 27559), (889, 23095), (1043, 19685), (1085, 18923), (3937, 5215), (4445, 4619)]