20646880

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3001}}^1$

素因数の和:3059

約数の個数: 48

約数和(自身を含む): 49929264

約数和(自身を除く): 29282384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 80, 86, 160, 172, 215, 344, 430, 688, 860, 1376, 1720, 3001, 3440, 6002, 6880, 12004, 15005, 24008, 30010, 48016, 60020, 96032, 120040, 129043, 240080, 258086, 480160, 516172, 645215, 1032344, 1290430, 2064688, 2580860, 4129376, 5161720, 10323440, 20646880]

約数ペア:

[(1, 20646880), (2, 10323440), (4, 5161720), (5, 4129376), (8, 2580860), (10, 2064688), (16, 1290430), (20, 1032344), (32, 645215), (40, 516172), (43, 480160), (80, 258086), (86, 240080), (160, 129043), (172, 120040), (215, 96032), (344, 60020), (430, 48016), (688, 30010), (860, 24008), (1376, 15005), (1720, 12004), (3001, 6880), (3440, 6002)]