20867280

素因数分解:

$2^4\times 3^1\times 5^1\times 7^1\times {\mathrm{12421}}^1$

素因数の和:12444

約数の個数: 80

約数和(自身を含む): 73935744

約数和(自身を除く): 53068464

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84, 105, 112, 120, 140, 168, 210, 240, 280, 336, 420, 560, 840, 1680, 12421, 24842, 37263, 49684, 62105, 74526, 86947, 99368, 124210, 149052, 173894, 186315, 198736, 248420, 260841, 298104, 347788, 372630, 434735, 496840, 521682, 596208, 695576, 745260, 869470, 993680, 1043364, 1304205, 1391152, 1490520, 1738940, 2086728, 2608410, 2981040, 3477880, 4173456, 5216820, 6955760, 10433640, 20867280]

約数ペア:

[(1, 20867280), (2, 10433640), (3, 6955760), (4, 5216820), (5, 4173456), (6, 3477880), (7, 2981040), (8, 2608410), (10, 2086728), (12, 1738940), (14, 1490520), (15, 1391152), (16, 1304205), (20, 1043364), (21, 993680), (24, 869470), (28, 745260), (30, 695576), (35, 596208), (40, 521682), (42, 496840), (48, 434735), (56, 372630), (60, 347788), (70, 298104), (80, 260841), (84, 248420), (105, 198736), (112, 186315), (120, 173894), (140, 149052), (168, 124210), (210, 99368), (240, 86947), (280, 74526), (336, 62105), (420, 49684), (560, 37263), (840, 24842), (1680, 12421)]