19981528

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{151}}^1$

素因数の和:320

約数の個数: 64

約数和(自身を含む): 45964800

約数和(自身を除く): 25983272

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 56, 68, 119, 136, 139, 151, 238, 278, 302, 476, 556, 604, 952, 973, 1057, 1112, 1208, 1946, 2114, 2363, 2567, 3892, 4228, 4726, 5134, 7784, 8456, 9452, 10268, 16541, 17969, 18904, 20536, 20989, 33082, 35938, 41978, 66164, 71876, 83956, 132328, 143752, 146923, 167912, 293846, 356813, 587692, 713626, 1175384, 1427252, 2497691, 2854504, 4995382, 9990764, 19981528]

約数ペア:

[(1, 19981528), (2, 9990764), (4, 4995382), (7, 2854504), (8, 2497691), (14, 1427252), (17, 1175384), (28, 713626), (34, 587692), (56, 356813), (68, 293846), (119, 167912), (136, 146923), (139, 143752), (151, 132328), (238, 83956), (278, 71876), (302, 66164), (476, 41978), (556, 35938), (604, 33082), (952, 20989), (973, 20536), (1057, 18904), (1112, 17969), (1208, 16541), (1946, 10268), (2114, 9452), (2363, 8456), (2567, 7784), (3892, 5134), (4228, 4726)]