20325040

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{3061}}^1$

素因数の和:3157

約数の個数: 40

約数和(自身を含む): 47840688

約数和(自身を除く): 27515648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 332, 415, 664, 830, 1328, 1660, 3061, 3320, 6122, 6640, 12244, 15305, 24488, 30610, 48976, 61220, 122440, 244880, 254063, 508126, 1016252, 1270315, 2032504, 2540630, 4065008, 5081260, 10162520, 20325040]

約数ペア:

[(1, 20325040), (2, 10162520), (4, 5081260), (5, 4065008), (8, 2540630), (10, 2032504), (16, 1270315), (20, 1016252), (40, 508126), (80, 254063), (83, 244880), (166, 122440), (332, 61220), (415, 48976), (664, 30610), (830, 24488), (1328, 15305), (1660, 12244), (3061, 6640), (3320, 6122)]