18560948

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{251}}^1$

素因数の和:420

約数の個数: 48

約数和(自身を含む): 39513600

約数和(自身を除く): 20952652

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 139, 251, 266, 278, 502, 532, 556, 973, 1004, 1757, 1946, 2641, 3514, 3892, 4769, 5282, 7028, 9538, 10564, 18487, 19076, 33383, 34889, 36974, 66766, 69778, 73948, 133532, 139556, 244223, 488446, 662891, 976892, 1325782, 2651564, 4640237, 9280474, 18560948]

約数ペア:

[(1, 18560948), (2, 9280474), (4, 4640237), (7, 2651564), (14, 1325782), (19, 976892), (28, 662891), (38, 488446), (76, 244223), (133, 139556), (139, 133532), (251, 73948), (266, 69778), (278, 66766), (502, 36974), (532, 34889), (556, 33383), (973, 19076), (1004, 18487), (1757, 10564), (1946, 9538), (2641, 7028), (3514, 5282), (3892, 4769)]