20973988

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:484

約数の個数: 48

約数和(自身を含む): 44876160

約数和(自身を除く): 23902172

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 119, 139, 238, 278, 317, 476, 556, 634, 973, 1268, 1946, 2219, 2363, 3892, 4438, 4726, 5389, 8876, 9452, 10778, 16541, 21556, 33082, 37723, 44063, 66164, 75446, 88126, 150892, 176252, 308441, 616882, 749071, 1233764, 1498142, 2996284, 5243497, 10486994, 20973988]

約数ペア:

[(1, 20973988), (2, 10486994), (4, 5243497), (7, 2996284), (14, 1498142), (17, 1233764), (28, 749071), (34, 616882), (68, 308441), (119, 176252), (139, 150892), (238, 88126), (278, 75446), (317, 66164), (476, 44063), (556, 37723), (634, 33082), (973, 21556), (1268, 16541), (1946, 10778), (2219, 9452), (2363, 8876), (3892, 5389), (4438, 4726)]