81521808

素因数分解:

$2^4\times 3^1\times {\mathrm{43}}^1\times {\mathrm{127}}^1\times {\mathrm{311}}^1$

素因数の和:492

約数の個数: 80

約数和(自身を含む): 217890816

約数和(自身を除く): 136369008

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 43, 48, 86, 127, 129, 172, 254, 258, 311, 344, 381, 508, 516, 622, 688, 762, 933, 1016, 1032, 1244, 1524, 1866, 2032, 2064, 2488, 3048, 3732, 4976, 5461, 6096, 7464, 10922, 13373, 14928, 16383, 21844, 26746, 32766, 39497, 40119, 43688, 53492, 65532, 78994, 80238, 87376, 106984, 118491, 131064, 157988, 160476, 213968, 236982, 262128, 315976, 320952, 473964, 631952, 641904, 947928, 1698371, 1895856, 3396742, 5095113, 6793484, 10190226, 13586968, 20380452, 27173936, 40760904, 81521808]

約数ペア:

[(1, 81521808), (2, 40760904), (3, 27173936), (4, 20380452), (6, 13586968), (8, 10190226), (12, 6793484), (16, 5095113), (24, 3396742), (43, 1895856), (48, 1698371), (86, 947928), (127, 641904), (129, 631952), (172, 473964), (254, 320952), (258, 315976), (311, 262128), (344, 236982), (381, 213968), (508, 160476), (516, 157988), (622, 131064), (688, 118491), (762, 106984), (933, 87376), (1016, 80238), (1032, 78994), (1244, 65532), (1524, 53492), (1866, 43688), (2032, 40119), (2064, 39497), (2488, 32766), (3048, 26746), (3732, 21844), (4976, 16383), (5461, 14928), (6096, 13373), (7464, 10922)]