66780

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{53}}^1$

素因数の和:75

約数の個数: 72

約数和(自身を含む): 235872

約数和(自身を除く): 169092

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 53, 60, 63, 70, 84, 90, 105, 106, 126, 140, 159, 180, 210, 212, 252, 265, 315, 318, 371, 420, 477, 530, 630, 636, 742, 795, 954, 1060, 1113, 1260, 1484, 1590, 1855, 1908, 2226, 2385, 3180, 3339, 3710, 4452, 4770, 5565, 6678, 7420, 9540, 11130, 13356, 16695, 22260, 33390, 66780]

約数ペア:

[(1, 66780), (2, 33390), (3, 22260), (4, 16695), (5, 13356), (6, 11130), (7, 9540), (9, 7420), (10, 6678), (12, 5565), (14, 4770), (15, 4452), (18, 3710), (20, 3339), (21, 3180), (28, 2385), (30, 2226), (35, 1908), (36, 1855), (42, 1590), (45, 1484), (53, 1260), (60, 1113), (63, 1060), (70, 954), (84, 795), (90, 742), (105, 636), (106, 630), (126, 530), (140, 477), (159, 420), (180, 371), (210, 318), (212, 315), (252, 265)]