20819610

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{4721}}^1$

素因数の和:4748

約数の個数: 72

約数和(自身を含む): 62982036

約数和(自身を除く): 42162426

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 49, 63, 70, 90, 98, 105, 126, 147, 210, 245, 294, 315, 441, 490, 630, 735, 882, 1470, 2205, 4410, 4721, 9442, 14163, 23605, 28326, 33047, 42489, 47210, 66094, 70815, 84978, 99141, 141630, 165235, 198282, 212445, 231329, 297423, 330470, 424890, 462658, 495705, 594846, 693987, 991410, 1156645, 1387974, 1487115, 2081961, 2313290, 2974230, 3469935, 4163922, 6939870, 10409805, 20819610]

約数ペア:

[(1, 20819610), (2, 10409805), (3, 6939870), (5, 4163922), (6, 3469935), (7, 2974230), (9, 2313290), (10, 2081961), (14, 1487115), (15, 1387974), (18, 1156645), (21, 991410), (30, 693987), (35, 594846), (42, 495705), (45, 462658), (49, 424890), (63, 330470), (70, 297423), (90, 231329), (98, 212445), (105, 198282), (126, 165235), (147, 141630), (210, 99141), (245, 84978), (294, 70815), (315, 66094), (441, 47210), (490, 42489), (630, 33047), (735, 28326), (882, 23605), (1470, 14163), (2205, 9442), (4410, 4721)]