20480080

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4339}}^1$

素因数の和:4411

約数の個数: 40

約数和(自身を含む): 48434400

約数和(自身を除く): 27954320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4339, 4720, 8678, 17356, 21695, 34712, 43390, 69424, 86780, 173560, 256001, 347120, 512002, 1024004, 1280005, 2048008, 2560010, 4096016, 5120020, 10240040, 20480080]

約数ペア:

[(1, 20480080), (2, 10240040), (4, 5120020), (5, 4096016), (8, 2560010), (10, 2048008), (16, 1280005), (20, 1024004), (40, 512002), (59, 347120), (80, 256001), (118, 173560), (236, 86780), (295, 69424), (472, 43390), (590, 34712), (944, 21695), (1180, 17356), (2360, 8678), (4339, 4720)]