28420280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{101501}}^1$

素因数の和:101519

約数の個数: 32

約数和(自身を含む): 73081440

約数和(自身を除く): 44661160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 101501, 203002, 406004, 507505, 710507, 812008, 1015010, 1421014, 2030020, 2842028, 3552535, 4060040, 5684056, 7105070, 14210140, 28420280]

約数ペア:

[(1, 28420280), (2, 14210140), (4, 7105070), (5, 5684056), (7, 4060040), (8, 3552535), (10, 2842028), (14, 2030020), (20, 1421014), (28, 1015010), (35, 812008), (40, 710507), (56, 507505), (70, 406004), (140, 203002), (280, 101501)]