81660816

素因数分解:

$2^4\times 3^2\times {\mathrm{223}}^1\times {\mathrm{2543}}^1$

素因数の和:2780

約数の個数: 60

約数和(自身を含む): 229651968

約数和(自身を除く): 147991152

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 223, 446, 669, 892, 1338, 1784, 2007, 2543, 2676, 3568, 4014, 5086, 5352, 7629, 8028, 10172, 10704, 15258, 16056, 20344, 22887, 30516, 32112, 40688, 45774, 61032, 91548, 122064, 183096, 366192, 567089, 1134178, 1701267, 2268356, 3402534, 4536712, 5103801, 6805068, 9073424, 10207602, 13610136, 20415204, 27220272, 40830408, 81660816]

約数ペア:

[(1, 81660816), (2, 40830408), (3, 27220272), (4, 20415204), (6, 13610136), (8, 10207602), (9, 9073424), (12, 6805068), (16, 5103801), (18, 4536712), (24, 3402534), (36, 2268356), (48, 1701267), (72, 1134178), (144, 567089), (223, 366192), (446, 183096), (669, 122064), (892, 91548), (1338, 61032), (1784, 45774), (2007, 40688), (2543, 32112), (2676, 30516), (3568, 22887), (4014, 20344), (5086, 16056), (5352, 15258), (7629, 10704), (8028, 10172)]