20808007520

素因数分解:

$2^5\times 5^1\times {\mathrm{107}}^1\times {\mathrm{1215421}}^1$

素因数の和:1215543

約数の個数: 48

約数和(自身を含む): 49618387728

約数和(自身を除く): 28810380208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 107, 160, 214, 428, 535, 856, 1070, 1712, 2140, 3424, 4280, 8560, 17120, 1215421, 2430842, 4861684, 6077105, 9723368, 12154210, 19446736, 24308420, 38893472, 48616840, 97233680, 130050047, 194467360, 260100094, 520200188, 650250235, 1040400376, 1300500470, 2080800752, 2601000940, 4161601504, 5202001880, 10404003760, 20808007520]

約数ペア:

[(1, 20808007520), (2, 10404003760), (4, 5202001880), (5, 4161601504), (8, 2601000940), (10, 2080800752), (16, 1300500470), (20, 1040400376), (32, 650250235), (40, 520200188), (80, 260100094), (107, 194467360), (160, 130050047), (214, 97233680), (428, 48616840), (535, 38893472), (856, 24308420), (1070, 19446736), (1712, 12154210), (2140, 9723368), (3424, 6077105), (4280, 4861684), (8560, 2430842), (17120, 1215421)]