18919568

素因数分解:

$2^4\times {\mathrm{47}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:375

約数の個数: 40

約数和(自身を含む): 37914240

約数和(自身を除く): 18994672

約数列:

[1, 2, 4, 8, 16, 47, 94, 139, 181, 188, 278, 362, 376, 556, 724, 752, 1112, 1448, 2224, 2896, 6533, 8507, 13066, 17014, 25159, 26132, 34028, 50318, 52264, 68056, 100636, 104528, 136112, 201272, 402544, 1182473, 2364946, 4729892, 9459784, 18919568]

約数ペア:

[(1, 18919568), (2, 9459784), (4, 4729892), (8, 2364946), (16, 1182473), (47, 402544), (94, 201272), (139, 136112), (181, 104528), (188, 100636), (278, 68056), (362, 52264), (376, 50318), (556, 34028), (724, 26132), (752, 25159), (1112, 17014), (1448, 13066), (2224, 8507), (2896, 6533)]