19288820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{587}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 42674688

約数和(自身を除く): 23385868

約数列:

[1, 2, 4, 5, 10, 20, 31, 53, 62, 106, 124, 155, 212, 265, 310, 530, 587, 620, 1060, 1174, 1643, 2348, 2935, 3286, 5870, 6572, 8215, 11740, 16430, 18197, 31111, 32860, 36394, 62222, 72788, 90985, 124444, 155555, 181970, 311110, 363940, 622220, 964441, 1928882, 3857764, 4822205, 9644410, 19288820]

約数ペア:

[(1, 19288820), (2, 9644410), (4, 4822205), (5, 3857764), (10, 1928882), (20, 964441), (31, 622220), (53, 363940), (62, 311110), (106, 181970), (124, 155555), (155, 124444), (212, 90985), (265, 72788), (310, 62222), (530, 36394), (587, 32860), (620, 31111), (1060, 18197), (1174, 16430), (1643, 11740), (2348, 8215), (2935, 6572), (3286, 5870)]