20755120

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8369}}^1$

素因数の和:8413

約数の個数: 40

約数和(自身を含む): 49818240

約数和(自身を除く): 29063120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8369, 16738, 33476, 41845, 66952, 83690, 133904, 167380, 259439, 334760, 518878, 669520, 1037756, 1297195, 2075512, 2594390, 4151024, 5188780, 10377560, 20755120]

約数ペア:

[(1, 20755120), (2, 10377560), (4, 5188780), (5, 4151024), (8, 2594390), (10, 2075512), (16, 1297195), (20, 1037756), (31, 669520), (40, 518878), (62, 334760), (80, 259439), (124, 167380), (155, 133904), (248, 83690), (310, 66952), (496, 41845), (620, 33476), (1240, 16738), (2480, 8369)]