1800000090

素因数分解:

$2^1\times 3^3\times 5^1\times 7^1\times {\mathrm{952381}}^1$

素因数の和:952404

約数の個数: 64

約数和(自身を含む): 5485720320

約数和(自身を除く): 3685720230

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 54, 63, 70, 90, 105, 126, 135, 189, 210, 270, 315, 378, 630, 945, 1890, 952381, 1904762, 2857143, 4761905, 5714286, 6666667, 8571429, 9523810, 13333334, 14285715, 17142858, 20000001, 25714287, 28571430, 33333335, 40000002, 42857145, 51428574, 60000003, 66666670, 85714290, 100000005, 120000006, 128571435, 180000009, 200000010, 257142870, 300000015, 360000018, 600000030, 900000045, 1800000090]

約数ペア:

[(1, 1800000090), (2, 900000045), (3, 600000030), (5, 360000018), (6, 300000015), (7, 257142870), (9, 200000010), (10, 180000009), (14, 128571435), (15, 120000006), (18, 100000005), (21, 85714290), (27, 66666670), (30, 60000003), (35, 51428574), (42, 42857145), (45, 40000002), (54, 33333335), (63, 28571430), (70, 25714287), (90, 20000001), (105, 17142858), (126, 14285715), (135, 13333334), (189, 9523810), (210, 8571429), (270, 6666667), (315, 5714286), (378, 4761905), (630, 2857143), (945, 1904762), (1890, 952381)]