1980090

素因数分解:

$2^1\times 3^2\times 5^1\times 7^2\times {\mathrm{449}}^1$

素因数の和:476

約数の個数: 72

約数和(自身を含む): 6002100

約数和(自身を除く): 4022010

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, 449, 490, 630, 735, 882, 898, 1347, 1470, 2205, 2245, 2694, 3143, 4041, 4410, 4490, 6286, 6735, 8082, 9429, 13470, 15715, 18858, 20205, 22001, 28287, 31430, 40410, 44002, 47145, 56574, 66003, 94290, 110005, 132006, 141435, 198009, 220010, 282870, 330015, 396018, 660030, 990045, 1980090]

約数ペア:

[(1, 1980090), (2, 990045), (3, 660030), (5, 396018), (6, 330015), (7, 282870), (9, 220010), (10, 198009), (14, 141435), (15, 132006), (18, 110005), (21, 94290), (30, 66003), (35, 56574), (42, 47145), (45, 44002), (49, 40410), (63, 31430), (70, 28287), (90, 22001), (98, 20205), (105, 18858), (126, 15715), (147, 13470), (210, 9429), (245, 8082), (294, 6735), (315, 6286), (441, 4490), (449, 4410), (490, 4041), (630, 3143), (735, 2694), (882, 2245), (898, 2205), (1347, 1470)]