20559490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2113}}^1$

素因数の和:2266

約数の個数: 32

約数和(自身を含む): 42618240

約数和(自身を除く): 22058750

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 2113, 4226, 4865, 9730, 10565, 14791, 21130, 29582, 73955, 147910, 293707, 587414, 1468535, 2055949, 2937070, 4111898, 10279745, 20559490]

約数ペア:

[(1, 20559490), (2, 10279745), (5, 4111898), (7, 2937070), (10, 2055949), (14, 1468535), (35, 587414), (70, 293707), (139, 147910), (278, 73955), (695, 29582), (973, 21130), (1390, 14791), (1946, 10565), (2113, 9730), (4226, 4865)]