28525140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{22639}}^1$

素因数の和:22661

約数の個数: 72

約数和(自身を含む): 98891520

約数和(自身を除く): 70366380

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 22639, 45278, 67917, 90556, 113195, 135834, 158473, 203751, 226390, 271668, 316946, 339585, 407502, 452780, 475419, 633892, 679170, 792365, 815004, 950838, 1018755, 1358340, 1426257, 1584730, 1901676, 2037510, 2377095, 2852514, 3169460, 4075020, 4754190, 5705028, 7131285, 9508380, 14262570, 28525140]

約数ペア:

[(1, 28525140), (2, 14262570), (3, 9508380), (4, 7131285), (5, 5705028), (6, 4754190), (7, 4075020), (9, 3169460), (10, 2852514), (12, 2377095), (14, 2037510), (15, 1901676), (18, 1584730), (20, 1426257), (21, 1358340), (28, 1018755), (30, 950838), (35, 815004), (36, 792365), (42, 679170), (45, 633892), (60, 475419), (63, 452780), (70, 407502), (84, 339585), (90, 316946), (105, 271668), (126, 226390), (140, 203751), (180, 158473), (210, 135834), (252, 113195), (315, 90556), (420, 67917), (630, 45278), (1260, 22639)]