19913902

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{257}}^1$

素因数の和:372

約数の個数: 32

約数和(自身を含む): 33102432

約数和(自身を除く): 13188530

約数列:

[1, 2, 17, 34, 43, 53, 86, 106, 257, 514, 731, 901, 1462, 1802, 2279, 4369, 4558, 8738, 11051, 13621, 22102, 27242, 38743, 77486, 187867, 231557, 375734, 463114, 585703, 1171406, 9956951, 19913902]

約数ペア:

[(1, 19913902), (2, 9956951), (17, 1171406), (34, 585703), (43, 463114), (53, 375734), (86, 231557), (106, 187867), (257, 77486), (514, 38743), (731, 27242), (901, 22102), (1462, 13621), (1802, 11051), (2279, 8738), (4369, 4558)]