67686280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{19013}}^1$

素因数の和:19113

約数の個数: 32

約数和(自身を含む): 154013400

約数和(自身を除く): 86327120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 19013, 38026, 76052, 95065, 152104, 190130, 380260, 760520, 1692157, 3384314, 6768628, 8460785, 13537256, 16921570, 33843140, 67686280]

約数ペア:

[(1, 67686280), (2, 33843140), (4, 16921570), (5, 13537256), (8, 8460785), (10, 6768628), (20, 3384314), (40, 1692157), (89, 760520), (178, 380260), (356, 190130), (445, 152104), (712, 95065), (890, 76052), (1780, 38026), (3560, 19013)]