640724042

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{65101}}^1$

素因数の和:65166

約数の個数: 32

約数和(自身を含む): 1187460480

約数和(自身を除く): 546736438

約数列:

[1, 2, 7, 14, 19, 37, 38, 74, 133, 259, 266, 518, 703, 1406, 4921, 9842, 65101, 130202, 455707, 911414, 1236919, 2408737, 2473838, 4817474, 8658433, 16861159, 17316866, 33722318, 45766003, 91532006, 320362021, 640724042]

約数ペア:

[(1, 640724042), (2, 320362021), (7, 91532006), (14, 45766003), (19, 33722318), (37, 17316866), (38, 16861159), (74, 8658433), (133, 4817474), (259, 2473838), (266, 2408737), (518, 1236919), (703, 911414), (1406, 455707), (4921, 130202), (9842, 65101)]