20091722

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{71}}^1$

素因数の和:167

約数の個数: 64

約数和(自身を含む): 39191040

約数和(自身を除く): 19099318

約数列:

[1, 2, 7, 14, 17, 29, 34, 41, 58, 71, 82, 119, 142, 203, 238, 287, 406, 493, 497, 574, 697, 986, 994, 1189, 1207, 1394, 2059, 2378, 2414, 2911, 3451, 4118, 4879, 5822, 6902, 8323, 8449, 9758, 14413, 16646, 16898, 20213, 20377, 28826, 35003, 40426, 40754, 49487, 70006, 84419, 98974, 141491, 168838, 245021, 282982, 346409, 490042, 590933, 692818, 1181866, 1435123, 2870246, 10045861, 20091722]

約数ペア:

[(1, 20091722), (2, 10045861), (7, 2870246), (14, 1435123), (17, 1181866), (29, 692818), (34, 590933), (41, 490042), (58, 346409), (71, 282982), (82, 245021), (119, 168838), (142, 141491), (203, 98974), (238, 84419), (287, 70006), (406, 49487), (493, 40754), (497, 40426), (574, 35003), (697, 28826), (986, 20377), (994, 20213), (1189, 16898), (1207, 16646), (1394, 14413), (2059, 9758), (2378, 8449), (2414, 8323), (2911, 6902), (3451, 5822), (4118, 4879)]