20808420815

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1\times {\mathrm{1801}}^1$

素因数の和:2272

約数の個数: 64

約数和(自身を含む): 31290792960

約数和(自身を除く): 10482372145

約数列:

[1, 5, 7, 13, 35, 65, 67, 91, 335, 379, 455, 469, 871, 1801, 1895, 2345, 2653, 4355, 4927, 6097, 9005, 12607, 13265, 23413, 24635, 25393, 30485, 34489, 63035, 117065, 120667, 126965, 163891, 172445, 177751, 330109, 603335, 682579, 819455, 844669, 888755, 1568671, 1650545, 2310763, 3412895, 4223345, 4778053, 7843355, 8873527, 10980697, 11553815, 23890265, 44367635, 45732793, 54903485, 62114689, 228663965, 310573445, 320129551, 594526309, 1600647755, 2972631545, 4161684163, 20808420815]

約数ペア:

[(1, 20808420815), (5, 4161684163), (7, 2972631545), (13, 1600647755), (35, 594526309), (65, 320129551), (67, 310573445), (91, 228663965), (335, 62114689), (379, 54903485), (455, 45732793), (469, 44367635), (871, 23890265), (1801, 11553815), (1895, 10980697), (2345, 8873527), (2653, 7843355), (4355, 4778053), (4927, 4223345), (6097, 3412895), (9005, 2310763), (12607, 1650545), (13265, 1568671), (23413, 888755), (24635, 844669), (25393, 819455), (30485, 682579), (34489, 603335), (63035, 330109), (117065, 177751), (120667, 172445), (126965, 163891)]