18717944

素因数分解:

$2^3\times 7^1\times {\mathrm{79}}^1\times {\mathrm{4231}}^1$

素因数の和:4323

約数の個数: 32

約数和(自身を含む): 40627200

約数和(自身を除く): 21909256

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 79, 158, 316, 553, 632, 1106, 2212, 4231, 4424, 8462, 16924, 29617, 33848, 59234, 118468, 236936, 334249, 668498, 1336996, 2339743, 2673992, 4679486, 9358972, 18717944]

約数ペア:

[(1, 18717944), (2, 9358972), (4, 4679486), (7, 2673992), (8, 2339743), (14, 1336996), (28, 668498), (56, 334249), (79, 236936), (158, 118468), (316, 59234), (553, 33848), (632, 29617), (1106, 16924), (2212, 8462), (4231, 4424)]