78947680

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{70489}}^1$

素因数の和:70511

約数の個数: 48

約数和(自身を含む): 213161760

約数和(自身を除く): 134214080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 70489, 140978, 281956, 352445, 493423, 563912, 704890, 986846, 1127824, 1409780, 1973692, 2255648, 2467115, 2819560, 3947384, 4934230, 5639120, 7894768, 9868460, 11278240, 15789536, 19736920, 39473840, 78947680]

約数ペア:

[(1, 78947680), (2, 39473840), (4, 19736920), (5, 15789536), (7, 11278240), (8, 9868460), (10, 7894768), (14, 5639120), (16, 4934230), (20, 3947384), (28, 2819560), (32, 2467115), (35, 2255648), (40, 1973692), (56, 1409780), (70, 1127824), (80, 986846), (112, 704890), (140, 563912), (160, 493423), (224, 352445), (280, 281956), (560, 140978), (1120, 70489)]