18721440

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{13001}}^1$

素因数の和:13022

約数の個数: 72

約数和(自身を含む): 63891828

約数和(自身を除く): 45170388

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 48, 60, 72, 80, 90, 96, 120, 144, 160, 180, 240, 288, 360, 480, 720, 1440, 13001, 26002, 39003, 52004, 65005, 78006, 104008, 117009, 130010, 156012, 195015, 208016, 234018, 260020, 312024, 390030, 416032, 468036, 520040, 585045, 624048, 780060, 936072, 1040080, 1170090, 1248096, 1560120, 1872144, 2080160, 2340180, 3120240, 3744288, 4680360, 6240480, 9360720, 18721440]

約数ペア:

[(1, 18721440), (2, 9360720), (3, 6240480), (4, 4680360), (5, 3744288), (6, 3120240), (8, 2340180), (9, 2080160), (10, 1872144), (12, 1560120), (15, 1248096), (16, 1170090), (18, 1040080), (20, 936072), (24, 780060), (30, 624048), (32, 585045), (36, 520040), (40, 468036), (45, 416032), (48, 390030), (60, 312024), (72, 260020), (80, 234018), (90, 208016), (96, 195015), (120, 156012), (144, 130010), (160, 117009), (180, 104008), (240, 78006), (288, 65005), (360, 52004), (480, 39003), (720, 26002), (1440, 13001)]