20775496

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{157}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 27003704

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 139, 157, 238, 278, 314, 476, 556, 628, 952, 973, 1099, 1112, 1256, 1946, 2198, 2363, 2669, 3892, 4396, 4726, 5338, 7784, 8792, 9452, 10676, 16541, 18683, 18904, 21352, 21823, 33082, 37366, 43646, 66164, 74732, 87292, 132328, 149464, 152761, 174584, 305522, 370991, 611044, 741982, 1222088, 1483964, 2596937, 2967928, 5193874, 10387748, 20775496]

約数ペア:

[(1, 20775496), (2, 10387748), (4, 5193874), (7, 2967928), (8, 2596937), (14, 1483964), (17, 1222088), (28, 741982), (34, 611044), (56, 370991), (68, 305522), (119, 174584), (136, 152761), (139, 149464), (157, 132328), (238, 87292), (278, 74732), (314, 66164), (476, 43646), (556, 37366), (628, 33082), (952, 21823), (973, 21352), (1099, 18904), (1112, 18683), (1256, 16541), (1946, 10676), (2198, 9452), (2363, 8792), (2669, 7784), (3892, 5338), (4396, 4726)]