20193960940

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{523}}^1\times {\mathrm{31649}}^1$

素因数の和:32242

約数の個数: 48

約数和(自身を含む): 43186298400

約数和(自身を除く): 22992337460

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 523, 610, 1046, 1220, 2092, 2615, 5230, 10460, 31649, 31903, 63298, 63806, 126596, 127612, 158245, 159515, 316490, 319030, 632980, 638060, 1930589, 3861178, 7722356, 9652945, 16552427, 19305890, 33104854, 38611780, 66209708, 82762135, 165524270, 331048540, 1009698047, 2019396094, 4038792188, 5048490235, 10096980470, 20193960940]

約数ペア:

[(1, 20193960940), (2, 10096980470), (4, 5048490235), (5, 4038792188), (10, 2019396094), (20, 1009698047), (61, 331048540), (122, 165524270), (244, 82762135), (305, 66209708), (523, 38611780), (610, 33104854), (1046, 19305890), (1220, 16552427), (2092, 9652945), (2615, 7722356), (5230, 3861178), (10460, 1930589), (31649, 638060), (31903, 632980), (63298, 319030), (63806, 316490), (126596, 159515), (127612, 158245)]