18541620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{431}}^1$

素因数の和:685

約数の個数: 72

約数和(自身を含む): 56609280

約数和(自身を除く): 38067660

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 239, 431, 478, 717, 862, 956, 1195, 1293, 1434, 1724, 2151, 2155, 2390, 2586, 2868, 3585, 3879, 4302, 4310, 4780, 5172, 6465, 7170, 7758, 8604, 8620, 10755, 12930, 14340, 15516, 19395, 21510, 25860, 38790, 43020, 77580, 103009, 206018, 309027, 412036, 515045, 618054, 927081, 1030090, 1236108, 1545135, 1854162, 2060180, 3090270, 3708324, 4635405, 6180540, 9270810, 18541620]

約数ペア:

[(1, 18541620), (2, 9270810), (3, 6180540), (4, 4635405), (5, 3708324), (6, 3090270), (9, 2060180), (10, 1854162), (12, 1545135), (15, 1236108), (18, 1030090), (20, 927081), (30, 618054), (36, 515045), (45, 412036), (60, 309027), (90, 206018), (180, 103009), (239, 77580), (431, 43020), (478, 38790), (717, 25860), (862, 21510), (956, 19395), (1195, 15516), (1293, 14340), (1434, 12930), (1724, 10755), (2151, 8620), (2155, 8604), (2390, 7758), (2586, 7170), (2868, 6465), (3585, 5172), (3879, 4780), (4302, 4310)]