17921440

素因数分解:

$2^5\times 5^1\times {\mathrm{101}}^1\times {\mathrm{1109}}^1$

素因数の和:1225

約数の個数: 48

約数和(自身を含む): 42797160

約数和(自身を除く): 24875720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 101, 160, 202, 404, 505, 808, 1010, 1109, 1616, 2020, 2218, 3232, 4040, 4436, 5545, 8080, 8872, 11090, 16160, 17744, 22180, 35488, 44360, 88720, 112009, 177440, 224018, 448036, 560045, 896072, 1120090, 1792144, 2240180, 3584288, 4480360, 8960720, 17921440]

約数ペア:

[(1, 17921440), (2, 8960720), (4, 4480360), (5, 3584288), (8, 2240180), (10, 1792144), (16, 1120090), (20, 896072), (32, 560045), (40, 448036), (80, 224018), (101, 177440), (160, 112009), (202, 88720), (404, 44360), (505, 35488), (808, 22180), (1010, 17744), (1109, 16160), (1616, 11090), (2020, 8872), (2218, 8080), (3232, 5545), (4040, 4436)]