18189976

素因数分解:

$2^3\times 7^4\times {\mathrm{947}}^1$

素因数の和:981

約数の個数: 40

約数和(自身を含む): 39830220

約数和(自身を除く): 21640244

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 947, 1372, 1894, 2401, 2744, 3788, 4802, 6629, 7576, 9604, 13258, 19208, 26516, 46403, 53032, 92806, 185612, 324821, 371224, 649642, 1299284, 2273747, 2598568, 4547494, 9094988, 18189976]

約数ペア:

[(1, 18189976), (2, 9094988), (4, 4547494), (7, 2598568), (8, 2273747), (14, 1299284), (28, 649642), (49, 371224), (56, 324821), (98, 185612), (196, 92806), (343, 53032), (392, 46403), (686, 26516), (947, 19208), (1372, 13258), (1894, 9604), (2401, 7576), (2744, 6629), (3788, 4802)]