19997432

素因数分解:

$2^3\times 7^1\times {\mathrm{13}}^2\times {\mathrm{2113}}^1$

素因数の和:2152

約数の個数: 48

約数和(自身を含む): 46423440

約数和(自身を除く): 26426008

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 169, 182, 338, 364, 676, 728, 1183, 1352, 2113, 2366, 4226, 4732, 8452, 9464, 14791, 16904, 27469, 29582, 54938, 59164, 109876, 118328, 192283, 219752, 357097, 384566, 714194, 769132, 1428388, 1538264, 2499679, 2856776, 4999358, 9998716, 19997432]

約数ペア:

[(1, 19997432), (2, 9998716), (4, 4999358), (7, 2856776), (8, 2499679), (13, 1538264), (14, 1428388), (26, 769132), (28, 714194), (52, 384566), (56, 357097), (91, 219752), (104, 192283), (169, 118328), (182, 109876), (338, 59164), (364, 54938), (676, 29582), (728, 27469), (1183, 16904), (1352, 14791), (2113, 9464), (2366, 8452), (4226, 4732)]