21000638895

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{137}}^1\times {\mathrm{179}}^1\times {\mathrm{1543}}^1$

素因数の和:1904

約数の個数: 64

約数和(自身を含む): 34977899520

約数和(自身を除く): 13977260625

約数列:

[1, 3, 5, 15, 37, 111, 137, 179, 185, 411, 537, 555, 685, 895, 1543, 2055, 2685, 4629, 5069, 6623, 7715, 15207, 19869, 23145, 24523, 25345, 33115, 57091, 73569, 76035, 99345, 122615, 171273, 211391, 276197, 285455, 367845, 634173, 828591, 856365, 907351, 1056955, 1380985, 2722053, 3170865, 4142955, 4536755, 7821467, 10219289, 13610265, 23464401, 30657867, 37838989, 39107335, 51096445, 113516967, 117322005, 153289335, 189194945, 567584835, 1400042593, 4200127779, 7000212965, 21000638895]

約数ペア:

[(1, 21000638895), (3, 7000212965), (5, 4200127779), (15, 1400042593), (37, 567584835), (111, 189194945), (137, 153289335), (179, 117322005), (185, 113516967), (411, 51096445), (537, 39107335), (555, 37838989), (685, 30657867), (895, 23464401), (1543, 13610265), (2055, 10219289), (2685, 7821467), (4629, 4536755), (5069, 4142955), (6623, 3170865), (7715, 2722053), (15207, 1380985), (19869, 1056955), (23145, 907351), (24523, 856365), (25345, 828591), (33115, 634173), (57091, 367845), (73569, 285455), (76035, 276197), (99345, 211391), (122615, 171273)]