81444930

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{997}}^1$

素因数の和:1403

約数の個数: 64

約数和(自身を含む): 224190720

約数和(自身を除く): 142745790

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 389, 778, 997, 1167, 1945, 1994, 2334, 2723, 2991, 3890, 4985, 5446, 5835, 5982, 6979, 8169, 9970, 11670, 13615, 13958, 14955, 16338, 20937, 27230, 29910, 34895, 40845, 41874, 69790, 81690, 104685, 209370, 387833, 775666, 1163499, 1939165, 2326998, 2714831, 3878330, 5429662, 5817495, 8144493, 11634990, 13574155, 16288986, 27148310, 40722465, 81444930]

約数ペア:

[(1, 81444930), (2, 40722465), (3, 27148310), (5, 16288986), (6, 13574155), (7, 11634990), (10, 8144493), (14, 5817495), (15, 5429662), (21, 3878330), (30, 2714831), (35, 2326998), (42, 1939165), (70, 1163499), (105, 775666), (210, 387833), (389, 209370), (778, 104685), (997, 81690), (1167, 69790), (1945, 41874), (1994, 40845), (2334, 34895), (2723, 29910), (2991, 27230), (3890, 20937), (4985, 16338), (5446, 14955), (5835, 13958), (5982, 13615), (6979, 11670), (8169, 9970)]