18962992

素因数分解:

$2^4\times {\mathrm{41}}^1\times {\mathrm{137}}^1\times {\mathrm{211}}^1$

素因数の和:397

約数の個数: 40

約数和(自身を含む): 38091312

約数和(自身を除く): 19128320

約数列:

[1, 2, 4, 8, 16, 41, 82, 137, 164, 211, 274, 328, 422, 548, 656, 844, 1096, 1688, 2192, 3376, 5617, 8651, 11234, 17302, 22468, 28907, 34604, 44936, 57814, 69208, 89872, 115628, 138416, 231256, 462512, 1185187, 2370374, 4740748, 9481496, 18962992]

約数ペア:

[(1, 18962992), (2, 9481496), (4, 4740748), (8, 2370374), (16, 1185187), (41, 462512), (82, 231256), (137, 138416), (164, 115628), (211, 89872), (274, 69208), (328, 57814), (422, 44936), (548, 34604), (656, 28907), (844, 22468), (1096, 17302), (1688, 11234), (2192, 8651), (3376, 5617)]