20852972

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{421}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 43955520

約数和(自身を除く): 23102548

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 61, 116, 122, 203, 244, 406, 421, 427, 812, 842, 854, 1684, 1708, 1769, 2947, 3538, 5894, 7076, 11788, 12209, 12383, 24418, 24766, 25681, 48836, 49532, 51362, 85463, 102724, 170926, 179767, 341852, 359534, 719068, 744749, 1489498, 2978996, 5213243, 10426486, 20852972]

約数ペア:

[(1, 20852972), (2, 10426486), (4, 5213243), (7, 2978996), (14, 1489498), (28, 744749), (29, 719068), (58, 359534), (61, 341852), (116, 179767), (122, 170926), (203, 102724), (244, 85463), (406, 51362), (421, 49532), (427, 48836), (812, 25681), (842, 24766), (854, 24418), (1684, 12383), (1708, 12209), (1769, 11788), (2947, 7076), (3538, 5894)]