19721700

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{1289}}^1$

素因数の和:1326

約数の個数: 108

約数和(自身を含む): 65503620

約数和(自身を除く): 45781920

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 25, 30, 34, 36, 45, 50, 51, 60, 68, 75, 85, 90, 100, 102, 150, 153, 170, 180, 204, 225, 255, 300, 306, 340, 425, 450, 510, 612, 765, 850, 900, 1020, 1275, 1289, 1530, 1700, 2550, 2578, 3060, 3825, 3867, 5100, 5156, 6445, 7650, 7734, 11601, 12890, 15300, 15468, 19335, 21913, 23202, 25780, 32225, 38670, 43826, 46404, 58005, 64450, 65739, 77340, 87652, 96675, 109565, 116010, 128900, 131478, 193350, 197217, 219130, 232020, 262956, 290025, 328695, 386700, 394434, 438260, 547825, 580050, 657390, 788868, 986085, 1095650, 1160100, 1314780, 1643475, 1972170, 2191300, 3286950, 3944340, 4930425, 6573900, 9860850, 19721700]

約数ペア:

[(1, 19721700), (2, 9860850), (3, 6573900), (4, 4930425), (5, 3944340), (6, 3286950), (9, 2191300), (10, 1972170), (12, 1643475), (15, 1314780), (17, 1160100), (18, 1095650), (20, 986085), (25, 788868), (30, 657390), (34, 580050), (36, 547825), (45, 438260), (50, 394434), (51, 386700), (60, 328695), (68, 290025), (75, 262956), (85, 232020), (90, 219130), (100, 197217), (102, 193350), (150, 131478), (153, 128900), (170, 116010), (180, 109565), (204, 96675), (225, 87652), (255, 77340), (300, 65739), (306, 64450), (340, 58005), (425, 46404), (450, 43826), (510, 38670), (612, 32225), (765, 25780), (850, 23202), (900, 21913), (1020, 19335), (1275, 15468), (1289, 15300), (1530, 12890), (1700, 11601), (2550, 7734), (2578, 7650), (3060, 6445), (3825, 5156), (3867, 5100)]