19962140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{2927}}^1$

素因数の和:2978

約数の個数: 48

約数和(自身を含む): 47222784

約数和(自身を除く): 27260644

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 55, 62, 110, 124, 155, 220, 310, 341, 620, 682, 1364, 1705, 2927, 3410, 5854, 6820, 11708, 14635, 29270, 32197, 58540, 64394, 90737, 128788, 160985, 181474, 321970, 362948, 453685, 643940, 907370, 998107, 1814740, 1996214, 3992428, 4990535, 9981070, 19962140]

約数ペア:

[(1, 19962140), (2, 9981070), (4, 4990535), (5, 3992428), (10, 1996214), (11, 1814740), (20, 998107), (22, 907370), (31, 643940), (44, 453685), (55, 362948), (62, 321970), (110, 181474), (124, 160985), (155, 128788), (220, 90737), (310, 64394), (341, 58540), (620, 32197), (682, 29270), (1364, 14635), (1705, 11708), (2927, 6820), (3410, 5854)]