81450640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32843}}^1$

素因数の和:32887

約数の個数: 40

約数和(自身を含む): 195487488

約数和(自身を除く): 114036848

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 32843, 65686, 131372, 164215, 262744, 328430, 525488, 656860, 1018133, 1313720, 2036266, 2627440, 4072532, 5090665, 8145064, 10181330, 16290128, 20362660, 40725320, 81450640]

約数ペア:

[(1, 81450640), (2, 40725320), (4, 20362660), (5, 16290128), (8, 10181330), (10, 8145064), (16, 5090665), (20, 4072532), (31, 2627440), (40, 2036266), (62, 1313720), (80, 1018133), (124, 656860), (155, 525488), (248, 328430), (310, 262744), (496, 164215), (620, 131372), (1240, 65686), (2480, 32843)]