128973940

素因数分解:

$2^2\times 5^1\times {\mathrm{1171}}^1\times {\mathrm{5507}}^1$

素因数の和:6687

約数の個数: 24

約数和(自身を含む): 271125792

約数和(自身を除く): 142151852

約数列:

[1, 2, 4, 5, 10, 20, 1171, 2342, 4684, 5507, 5855, 11014, 11710, 22028, 23420, 27535, 55070, 110140, 6448697, 12897394, 25794788, 32243485, 64486970, 128973940]

約数ペア:

[(1, 128973940), (2, 64486970), (4, 32243485), (5, 25794788), (10, 12897394), (20, 6448697), (1171, 110140), (2342, 55070), (4684, 27535), (5507, 23420), (5855, 22028), (11014, 11710)]