21283040

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{7001}}^1$

素因数の和:7035

約数の個数: 48

約数和(自身を含む): 52935120

約数和(自身を除く): 31652080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 7001, 14002, 28004, 35005, 56008, 70010, 112016, 133019, 140020, 224032, 266038, 280040, 532076, 560080, 665095, 1064152, 1120160, 1330190, 2128304, 2660380, 4256608, 5320760, 10641520, 21283040]

約数ペア:

[(1, 21283040), (2, 10641520), (4, 5320760), (5, 4256608), (8, 2660380), (10, 2128304), (16, 1330190), (19, 1120160), (20, 1064152), (32, 665095), (38, 560080), (40, 532076), (76, 280040), (80, 266038), (95, 224032), (152, 140020), (160, 133019), (190, 112016), (304, 70010), (380, 56008), (608, 35005), (760, 28004), (1520, 14002), (3040, 7001)]