81263120

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23623}}^1$

素因数の和:23679

約数の個数: 40

約数和(自身を含む): 193338816

約数和(自身を除く): 112075696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 23623, 47246, 94492, 118115, 188984, 236230, 377968, 472460, 944920, 1015789, 1889840, 2031578, 4063156, 5078945, 8126312, 10157890, 16252624, 20315780, 40631560, 81263120]

約数ペア:

[(1, 81263120), (2, 40631560), (4, 20315780), (5, 16252624), (8, 10157890), (10, 8126312), (16, 5078945), (20, 4063156), (40, 2031578), (43, 1889840), (80, 1015789), (86, 944920), (172, 472460), (215, 377968), (344, 236230), (430, 188984), (688, 118115), (860, 94492), (1720, 47246), (3440, 23623)]