20253040

素因数分解:

$2^4\times 5^1\times {\mathrm{383}}^1\times {\mathrm{661}}^1$

素因数の和:1057

約数の個数: 40

約数和(自身を含む): 47282688

約数和(自身を除く): 27029648

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 383, 661, 766, 1322, 1532, 1915, 2644, 3064, 3305, 3830, 5288, 6128, 6610, 7660, 10576, 13220, 15320, 26440, 30640, 52880, 253163, 506326, 1012652, 1265815, 2025304, 2531630, 4050608, 5063260, 10126520, 20253040]

約数ペア:

[(1, 20253040), (2, 10126520), (4, 5063260), (5, 4050608), (8, 2531630), (10, 2025304), (16, 1265815), (20, 1012652), (40, 506326), (80, 253163), (383, 52880), (661, 30640), (766, 26440), (1322, 15320), (1532, 13220), (1915, 10576), (2644, 7660), (3064, 6610), (3305, 6128), (3830, 5288)]