21000261815

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{751}}^1\times {\mathrm{8117}}^1$

素因数の和:8939

約数の個数: 32

約数和(自身を含む): 27691082496

約数和(自身を除く): 6690820681

約数列:

[1, 5, 13, 53, 65, 265, 689, 751, 3445, 3755, 8117, 9763, 39803, 40585, 48815, 105521, 199015, 430201, 517439, 527605, 2151005, 2587195, 5592613, 6095867, 27963065, 30479335, 79246271, 323080951, 396231355, 1615404755, 4200052363, 21000261815]

約数ペア:

[(1, 21000261815), (5, 4200052363), (13, 1615404755), (53, 396231355), (65, 323080951), (265, 79246271), (689, 30479335), (751, 27963065), (3445, 6095867), (3755, 5592613), (8117, 2587195), (9763, 2151005), (39803, 527605), (40585, 517439), (48815, 430201), (105521, 199015)]