19679680

素因数分解:

$2^6\times 5^1\times {\mathrm{89}}^1\times {\mathrm{691}}^1$

素因数の和:797

約数の個数: 56

約数和(自身を含む): 47457360

約数和(自身を除く): 27777680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 89, 160, 178, 320, 356, 445, 691, 712, 890, 1382, 1424, 1780, 2764, 2848, 3455, 3560, 5528, 5696, 6910, 7120, 11056, 13820, 14240, 22112, 27640, 28480, 44224, 55280, 61499, 110560, 122998, 221120, 245996, 307495, 491992, 614990, 983984, 1229980, 1967968, 2459960, 3935936, 4919920, 9839840, 19679680]

約数ペア:

[(1, 19679680), (2, 9839840), (4, 4919920), (5, 3935936), (8, 2459960), (10, 1967968), (16, 1229980), (20, 983984), (32, 614990), (40, 491992), (64, 307495), (80, 245996), (89, 221120), (160, 122998), (178, 110560), (320, 61499), (356, 55280), (445, 44224), (691, 28480), (712, 27640), (890, 22112), (1382, 14240), (1424, 13820), (1780, 11056), (2764, 7120), (2848, 6910), (3455, 5696), (3560, 5528)]